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IETF RFC 4639
Cable Device Management Information Base for Data-Over-Cable Service Interface Specification (DOCSIS) Compliant Cable Modems and Cable Modem Termination Systems
Last modified on Thursday, December 21st, 2006
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Network Working Group R. Woundy
Request for Comments: 4639 Comcast Cable
Obsoletes: 2669 K. Marez
Category: Standards Track Motorola
December 2006
Cable Device Management Information Base for
Data-Over-Cable Service Interface Specification (DOCSIS)
Compliant Cable Modems and Cable Modem Termination Systems
 Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright © The IETF Trust (2006).
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it defines a basic set of managed objects for Simple
Network Management Protocol (SNMP)-based management of Data Over
Cable Service Interface Specification (DOCSIS)-compliant Cable Modems
and Cable Modem Termination Systems.
This memo obsoletes RFC 2669.
Woundy & Marez Standards Track PAGE 1 
RFC 4639 DOCSIS Cable Device MIB December 2006
Table of Contents
1. The Internet-Standard Management Framework ......................3
2. Glossary ........................................................3
2.1. CATV .......................................................3
2.2. CM or Cable Modem ..........................................3
2.3. CMTS or Cable Modem Termination System .....................3
2.4. DOCSIS or Data-Over-Cable Service Interface Specification ..3
2.5. Downstream .................................................4
2.6. Head-End ...................................................4
2.7. Media Access Control (MAC) Packet ..........................4
2.8. RF .........................................................4
2.9. Simple Network Management Protocol (SNMP) ..................4
2.10. Upstream ..................................................4
3. Introduction ....................................................4
3.1. Structure of the MIB .......................................5
3.1.1. IMPORTed MIB Modules and REFERENCE Clauses ..........6
3.1.2. Persistence Model for Cable Modems ..................6
3.1.3. IPv4 Compliance .....................................6
3.2. Management Requirements ....................................7
3.2.1. Handling of Software Upgrades .......................7
3.2.2. Events and Notifications ............................8
3.2.3. Notification Throttling .............................8
3.2.3.1. Notification Rate Throttling ...............8
3.2.3.2. Limiting the Notification Rate .............9
3.3. Protocol Filters ...........................................9
3.3.1. Inbound LLC Filters: docsDevFilterLLCTable .........10
3.3.2. Special Filters ....................................11
3.3.2.1. IP Spoofing Filters:
docsDevCpeTable, docsDevCpeInetTable ......11
3.3.2.2. SNMP Access Filters:
docsDevNmAccessTable ......................11
3.3.3. IP Filtering: docsDevFilterIpTable .................12
3.3.4. Outbound LLC Filters ...............................13
4. Definitions ....................................................13
5. Acknowledgements ...............................................78
5.1. Revision Descriptions .....................................78
6. Security Considerations ........................................79
7. IANA Considerations ............................................82
8. References .....................................................83
8.1. Normative References ......................................83
8.2. Informative References ....................................85
Woundy & Marez Standards Track PAGE 2
RFC 4639 DOCSIS Cable Device MIB December 2006
1. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC 3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC 2578], STD 58, RFC 2579 [RFC 2579] and STD 58, RFC 2580
[RFC 2580].
2. Glossary
The terms in this document are derived either from normal cable
system usage, or from the documents associated with the Data-Over-
Cable Service Interface Specification (DOCSIS) process.
2.1. CATV
Originally "Community Antenna Television", now used to refer to any
cable or hybrid fiber and cable system used to deliver video signals
to a community.
2.2. CM or Cable Modem
A CM acts as a "slave" station in a DOCSIS-compliant cable data
system.
2.3. CMTS or Cable Modem Termination System
A generic term covering a cable bridge or cable router in a head-end.
A CMTS acts as the master station in a DOCSIS-compliant cable data
system. It is the only station that transmits downstream, and it
controls the scheduling of upstream transmissions by its associated
CMs.
2.4. DOCSIS or Data-Over-Cable Service Interface Specification
A term referring to the ITU-T Recommendation J.112 [ITU-T_J.112],
Annex B, standard for cable modem systems. [RFI1.0] [RFI1.1]
[RFI2.0]
Woundy & Marez Standards Track PAGE 3
RFC 4639 DOCSIS Cable Device MIB December 2006
2.5. Downstream
The direction from the head-end towards the subscriber.
2.6. Head-End
The origination point in most cable systems of the subscriber video
signals. Generally, also the location of the CMTS equipment.
2.7. Media Access Control (MAC) Packet
A DOCSIS Packet Data Unit.
2.8. RF
Radio Frequency.
2.9. Simple Network Management Protocol (SNMP)
Protocol used for network access to Management Information Base (MIB)
objects. The three most commonly used versions are Version 1
(SNMPv1), Version 2 (SNMPv2c), and Version 3 (SNMPv3).
2.10. Upstream
The direction from the subscriber towards the head-end.
3. Introduction
This MIB module provides a set of objects required for the management
of DOCSIS-compliant Cable Modems (CM) and Cable Modem Termination
Systems (CMTS). The specification is derived from the DOCSIS Radio
Frequency Interface specification [RFI1.0]. Please note that the
DOCSIS 1.0 standard only required that Cable Modems implement SNMPv1
and to process Internet Protocol Version 4 (IPv4) customer traffic.
Design choices in the original version of this MIB module reflected
those requirements. DOCSIS 1.1 [RFI1.1] and DOCSIS 2.0 [RFI2.0]
require support for SNMPv3, as well as for SNMPv1 and SNMPv2c, and
the changes in this MIB module over the previous proposed standard
version reflect those additional requirements.
Future versions of DOCSIS, starting with DOCSIS 3.0 [MULPI3.0], are
expected to require support for the Internet Protocol Version 6
(IPv6) as both a Customer Premise Equipment (CPE) protocol and one
supported by the network elements of the DOCSIS CMTS/CM system.
Woundy & Marez Standards Track PAGE 4
RFC 4639 DOCSIS Cable Device MIB December 2006
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC 2119].
3.1. Structure of the MIB
This MIB module is structured into seven components. A component
contains one or more MIB groups related by deprecation or logical
extension.
o The docsDevBaseGroup extends the MIB-II 'system' group of RFC 3418
[RFC 3418] with objects needed for cable device system management.
Related to this group is the docsDevBaseIgmpGroup (enabling
Internet Group Management Protocol (IGMP) status and control) and
the docsDevBaseMaxCpeGroup (managing the maximum number of CPEs
permitted access through the cable modem).
o The docsDevNmAccessGroup and the docsDevNmAccessExtGroup provide a
minimum level of SNMP access security (see Section 2.7 of
[OSSI1.0], Section 2 of [OSSI1.1], and Section 5 of [OSSI2.0]).
With the completion of the SNMP coexistence document, RFC 3584
[RFC 3584], these groups have been deprecated in this version of
the MIB.
o The docsDevSoftwareGroup, updated by the docsDevSoftwareGroupV2,
provides information for network-downloadable software upgrades.
See "Handling of Software Upgrades", below.
o The docsDevServerGroup, updated by the docsDevServerGroupV2,
provides information about the progress of the interaction between
the CM or CMTS and various provisioning servers.
o The docsDevEventGroup, updated by the docsDevEventGroupV2,
provides control and logging for event reporting. With the
addition of the SNMP Notification MIB, RFC 3413 [RFC 3413], and
Notification Log MIB, RFC 3014 [RFC 3014], which cover event
reporting, the objects in this MIB module have been modified to
allow for the usage of these RFCs.
o The docsDevFilterGroup configures filters at the link layer and IP
layer for bridged data traffic. This group has been deprecated in
this version of the MIB in favor of the docsDevFilterLLCGroup, and
by groups from the Differentiated Services MIB [RFC 3289] --
specifically, the groups representing the Data Path, Classifier,
and Actions tables from that MIB.
Woundy & Marez Standards Track PAGE 5
RFC 4639 DOCSIS Cable Device MIB December 2006
o The docsDevCpeGroup, updated by the docsDevInetCpeGroup, provides
control over which IP addresses may be used by CPEs (e.g., PCs)
serviced by a given cable modem. This provides anti-spoofing
control at the point of origin for a large cable modem system.
This group is separate from docsDevFilter, primarily as this group
is only implemented on the Cable Modem (CM) and MUST NOT be
implemented on the Cable Modem Termination System (CMTS).
3.1.1. IMPORTed MIB Modules and REFERENCE Clauses
This MIB module IMPORTs definitions normatively from the following
MIB modules, beyond [RFC 2578], [RFC 2579], and [RFC 2580]: INET-
ADDRESS-MIB [RFC 4001], SNMP-FRAMEWORK-MIB [RFC 3411], IF-MIB
[RFC 2863], RMON2-MIB [RFC 4502], and DIFFSERV-MIB [RFC 3289].
This MIB module also includes DESCRIPTION and REFERENCE clauses that
normatively refer to [RFC 868], [RFC 3617], [RFI1.0], [RFI1.1],
[RFI2.0], [OSSI1.1], and [OSSI2.0].
3.1.2. Persistence Model for Cable Modems
Most of the tables in this MIB module (e.g., docsDevNmAccessTable,
docsDevFilterLLCTable) are specified not to let objects persist
across reboots.
The expectation (and current operational practice) is that upon
reboot, these tables are cleared and repopulated from the DOCSIS
configuration file supplied by the cable operator. This approach
enables a cable modem to adapt to the current cable operator's
environment, which in turn enables cable modem portability across
different cable operators.
A notable exception to the persistence model is docsDevEventTable,
since it is useful to maintain a record of events across reboots for
debugging purposes.
3.1.3. IPv4 Compliance
Please note that the compliance statements in this version of the MIB
module require support only for IPv4 addresses. That is because the
current versions of the DOCSIS protocols (1.0, 1.1, and 2.0) are not
IPv6 capable. Although support for IPv6 will require changes to the
DOCSIS protocols, it is expected that the only changes needed to the
MIB module itself will be the addition of new compliance statements
that mandate support for IPv6 addresses.
Woundy & Marez Standards Track PAGE 6
RFC 4639 DOCSIS Cable Device MIB December 2006
3.2. Management Requirements
3.2.1. Handling of Software Upgrades
The Cable Modem software upgrade process is documented in [RFI1.0].
From a network management station, the operator
o sets docsDevSwServer to the address of the Trivial File Transfer
Protocol (TFTP) server for software upgrades;
o sets docsDevSwFilename to the file pathname of the software
upgrade image; and
o sets docsDevSwAdminStatus to upgrade-from-mgt.
Although DOCSIS only specifies the implementation of the TFTP
protocol [RFC 1350] for file transfers, other functional entities
embedded within the cable device (particularly a PacketCable
Multimedia Terminal Adapter [MTA-PROV]) specify the optional
implementation of the Hyper Text Transfer Protocol (HTTP) [RFC 1945]
and [RFC 2616] for file transfers. The value of the
docsDevSwServerTransportProtocol object determines which protocol is
used for SNMP-initiated software upgrade.
One reason for the SNMP-initiated upgrade is to allow loading of a
temporary software image (e.g., special diagnostic software) that
differs from the software normally used on that device without
changing the provisioning database.
Note that software upgrades should not be accepted blindly by the
cable device. The cable device may refuse an upgrade if
o the download is incomplete;
o the file contents are incomplete or damaged; or
o the software is not intended for that hardware device (this may
include the case of a feature set that has not been purchased for
this device).
A cable device that implements the code verification mechanisms of
[BPIPLUS] verifies the source and integrity of the downloaded image
by validating one or more Code Verification Signatures that are
bundled within the software upgrade.
Woundy & Marez Standards Track PAGE 7
RFC 4639 DOCSIS Cable Device MIB December 2006
3.2.2. Events and Notifications
This MIB module provides control facilities for reporting events
through syslog [RFC 3164], notifications (traps and informs), and
non-volatile logging. Additional controls allow the agent to use the
SNMP Notification MIB [RFC 3413] and Notification Log MIB [RFC 3014]
for event notification.
The conventions for event reporting are outside the scope of this
document. The definition and coding of common DOCSIS notifications
can be found in [RFC 4547].
3.2.3. Notification Throttling
The CM and CMTS MUST provide support for notification message
throttling as described below. The network operator can employ
notification rate throttling or notification limiting by manipulating
the appropriate MIB variables.
3.2.3.1. Notification Rate Throttling
Network operators may employ either of two rate control methods. In
the first method, the device ceases to send notifications when the
rate exceeds the specified maximum message rate. It resumes sending
notifications only if reactivated by a network management station
request.
In the second method, the device resumes sending notifications when
the rate falls below the specified maximum message rate.
The network operator configures the specified maximum message rate by
setting the measurement interval (in seconds), and the maximum number
of notifications to be transmitted within the measurement interval.
The operator can query the operational throttling state (to determine
whether notifications are enabled or blocked by throttling) of the
device, as well as query and set the administrative throttling state
(to manage the rate control method) of the device.
Woundy & Marez Standards Track PAGE 8
RFC 4639 DOCSIS Cable Device MIB December 2006
3.2.3.2. Limiting the Notification Rate
Network operators may wish to limit the number of notifications sent
by a device over a specified time period. The device ceases to send
notifications when the number of notifications exceeds the specified
threshold. It resumes sending notifications only when the
measurement interval has passed.
The network operator defines the maximum number of notifications he
is willing to handle and sets the measurement interval to a large
number (in hundredths of a second). For this case, the
administrative throttling state is set to stop at a threshold that is
the maximum number of notifications.
See "Techniques for Managing Asynchronously Generated Alerts"
[RFC 1224] for additional technical motivations.
3.3. Protocol Filters
The Cable Device MIB provides objects for both Link Layer Control
(LLC) and IP protocol filters. The LLC protocol filter entries can
be used to limit CM forwarding to a restricted set of network-layer
protocols (such as IP, Internetwork Packet Exchange (IPX), Network
Basic Input/Output System (NetBIOS), and Appletalk).
The IP protocol filter entries can be used to restrict upstream or
downstream traffic according to source and destination IP addresses,
transport-layer protocols (such as Transport Control Protocol (TCP),
User Datagram Protocol (UDP), and Internet Control Message Protocol
(ICMP)), and source and destination TCP/UDP port numbers.
In general, a cable modem applies filters (or, more properly,
classifiers) in an order appropriate to the layering model.
Specifically, the inbound MAC (or LLC) layer filters are applied
first, then the "special" filters, then the IP layer inbound filters,
then the IP layer outbound filters, and then any final LLC outbound
filters.
Woundy & Marez Standards Track PAGE 9
RFC 4639 DOCSIS Cable Device MIB December 2006
*****************
* LLC Filter In *
*****************
|
v
*******************
* Special Filters *
* | *
* V *
* ************ *
* * IP Spoof * *
* ************ *
* | *
* v *
* *************** *
* * SNMP Access * *
* *************** *
* | *
*******************
|
v
****************
* IP Filter In *
****************
|
v
*****************
* IP Filter Out *
*****************
|
v
******************
* LLC Filter Out *
******************
3.3.1. Inbound LLC Filters: docsDevFilterLLCTable
The inbound LLC (or MAC or level-2) filters are contained in the
docsDevFilterLLCTable and are applied to level-2 frames entering the
cable modem from either the RF MAC interface or from one of the CPE
interfaces (physical or logical). These filters are used to prohibit
the processing and forwarding of certain types of level-2 traffic
that may be disruptive to the network. The filters, as currently
specified, can be set to cause the modem either to drop frames that
match at least one filter, or to process a frame that matches at
least one filter. Some examples of possible configurations would be
to permit only IP (and ARP) traffic, or to drop NetBIOS traffic.
Woundy & Marez Standards Track PAGE 10
RFC 4639 DOCSIS Cable Device MIB December 2006
3.3.2. Special Filters
Special filters are applied after the packet is accepted from the MAC
layer by the IP module, but before any other processing is done.
They are filters that apply only to a very specific class of traffic.
3.3.2.1. IP Spoofing Filters: docsDevCpeTable, docsDevCpeInetTable
IP spoofing filters are applied to packets entering the modem from
one of the CPE interfaces and are intended to prevent a subscriber
from stealing or misusing IP addresses that were not assigned to the
subscriber. If the filters are active (enabled), the source address
of the IP packet must match at least one IP address in one of these
two tables (docsDevCpeTable or docsDevCpeInetTable), or it is
discarded without further processing.
To prevent potential implementation ambiguity, the device consults
the docsDevCpeTable for the IP packet source address before
consulting the docsDevCpeInetTable.
The table can be automatically populated where the first N different
IP addresses seen from the CPE side of the cable modem are used to
populate the table automatically. The spoofing filters are specified
in the docsDevCpeTable and the docsDevCpeInetTable, and the policy
for automatically creating filters in those tables is controlled by
docsDevCpeEnroll and docsDevMaxCpe, as well as by the network
management agent.
Similar IP spoofing filter controls are defined for CMTS
implementation in the Subscriber Management MIB [RFC 4036].
3.3.2.2. SNMP Access Filters: docsDevNmAccessTable
The SNMP access filters are applied to SNMP packets entering from any
interface and destined for the cable modem. If the packets enter
from a CPE interface, the SNMP filters are applied after the IP
spoofing filters. The filters only apply to SNMPv1 or SNMPv2c
traffic and are not consulted for SNMPv3 traffic (and need not be
implemented by a v3-only agent). SNMPv3 access control is specified
in the User Security Model MIB, in [RFC 3414].
With the completion of the SNMP coexistence document, RFC 3584
[RFC 3584], docsDevNmAccess table has been deprecated in this version
of the MIB. See the body of the MIB for the description of how
agents should handle the interaction between RFC 3584 MIBs and this
MIB.
Woundy & Marez Standards Track PAGE 11
RFC 4639 DOCSIS Cable Device MIB December 2006
3.3.3. IP Filtering: docsDevFilterIpTable
The IP Filtering table acts as a classifier table. Each row in the
table describes a template against which IP packets are compared.
The template includes source and destination addresses (and their
associated masks), upper level protocol (e.g., TCP, UDP), source and
destination port ranges, and Terms of Service (ToS) values. A row
also contains interface and traffic direction match values that have
to be considered in combination. All columns of a particular row
must match the appropriate fields in the packet and must match the
interface and direction items for the packet to result in a match to
the packet.
When classifying a packet, each table is scanned, beginning with the
lowest number filter. If the agent finds a match, it applies the
group of policies specified. If the matched filter has the continue
bit set, the agent continues the scan possibly matching additional
filters and applying additional policies. For example, this allows
the agent to take one set of actions for the 24.0.16/255.255.255.0
group and one set of actions for telnet packets to/from 24.0.16.30,
and these sets of actions may not be mutually exclusive.
Once a packet is matched, one of three actions happen according to
the setting of docsDevFilterIpControl in the row. The packet may be
dropped, in which case no further processing is required. The packet
may be accepted, and processing of the packet continues. Lastly, the
packet may have a set of policy actions applied to it. If
docsDevFilterIpContinue is set to true, scanning of the table
continues and additional matches may result.
When a packet matches and docsDevFilterIpControl in the filter
matched is set to 'policy', the value of docsDevFilterIpPolicyId is
used as a selector into the docsDevFilterPolicyTable. The first
level of indirection may result in zero or more actions being taken
according to the match. The docsDevFilterPolicyTable is scanned in
row order, and all rows where docsDevFilterPolicyId equals
docsDevFilterIpPolicyId have the action specified by the
docsDevFilterPolicyValue 'executed'.
For an example of the use of these IP Filtering MIB tables, see
[RFC 2669].
The IP Filtering table and related tables have been deprecated in
this version of the MIB in favor of the Data Path, Classifier, and
Action tables from the Differentiated Services MIB [RFC 3289]. See
the body of the MIB for the description of how agents should handle
the interaction between RFC 3289 MIBs and this MIB module.
Woundy & Marez Standards Track PAGE 12
RFC 4639 DOCSIS Cable Device MIB December 2006
3.3.4. Outbound LLC Filters
Lastly, any outbound LLC filters are applied to the packet just prior
to its being emitted on the appropriate interface. This MIB module
does not specify any outbound LLC filters, but section 3 of the
DOCSIS Quality of Service (QoS) MIB, [RFC 4323], includes outbound LLC
filtering requirements.
4. Definitions
DOCS-CABLE-DEVICE-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY,
OBJECT-TYPE,
IpAddress,
Unsigned32,
Counter32,
Integer32,
zeroDotZero,
mib-2
FROM SNMPv2-SMI -- RFC 2578
RowStatus,
RowPointer,
DateAndTime,
TruthValue,
StorageType
FROM SNMPv2-TC -- RFC 2579
InetAddressType,
InetAddress
FROM INET-ADDRESS-MIB -- RFC 4001
OBJECT-GROUP,
MODULE-COMPLIANCE
FROM SNMPv2-CONF -- RFC 2580
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB -- RFC 3411
InterfaceIndexOrZero
FROM IF-MIB -- RFC 2863
ZeroBasedCounter32
FROM RMON2-MIB -- RFC 4502
diffServMIBDataPathGroup,
diffServMIBClfrGroup,
diffServMIBClfrElementGroup,
diffServMIBMultiFieldClfrGroup,
diffServMIBActionGroup,
diffServMIBDscpMarkActGroup,
diffServMIBCounterGroup,
diffServMIBAlgDropGroup,
Woundy & Marez Standards Track PAGE 13
RFC 4639 DOCSIS Cable Device MIB December 2006
diffServDataPathStatus,
diffServClfrStatus,
diffServClfrElementStatus,
diffServMultiFieldClfrAddrType,
diffServMultiFieldClfrSrcAddr,
diffServMultiFieldClfrDstAddr,
diffServAlgDropStatus,
diffServDataPathStorage,
diffServClfrStorage,
diffServClfrElementStorage,
diffServMultiFieldClfrStorage,
diffServActionStorage,
diffServCountActStorage,
diffServAlgDropStorage,
diffServAlgDropType
FROM DIFFSERV-MIB; -- RFC 3289
docsDev MODULE-IDENTITY
LAST-UPDATED "200612200000Z" -- December 20, 2006
ORGANIZATION "IETF IP over Cable Data Network
Working Group"
CONTACT-INFO
" Rich Woundy
Postal: Comcast Cable
27 Industrial Avenue
Chelmsford, MA 01824 U.S.A.
Phone: +1 978 244 4010
E-mail: richard_woundy@cable.comcast.com
Kevin Marez
Postal: Motorola Corporation
6450 Sequence Drive
San Diego, CA 92121 U.S.A.
Phone: +1 858 404 3785
E-mail: kevin.marez@motorola.com
IETF IPCDN Working Group
General Discussion: ipcdn@ietf.org
Subscribe: http://www.ietf.org/mailman/listinfo/ipcdn
Archive: ftp://ftp.ietf.org/ietf-mail-archive/ipcdn
Co-chairs: Richard Woundy,
richard_woundy@cable.comcast.com
Jean-Francois Mule,
jf.mule@cablelabs.com"
DESCRIPTION
"This is the MIB Module for DOCSIS-compliant cable modems
Woundy & Marez Standards Track PAGE 14
RFC 4639 DOCSIS Cable Device MIB December 2006
and cable-modem termination systems.
Copyright © The IETF Trust (2006). This version
of this MIB module was published in RFC 4639; for full
legal notices see the RFC itself."
REVISION "200612200000Z" -- December 20, 2006
DESCRIPTION
"Second version, published as RFC 4639.
Modifications to this MIB module since RFC 2669 include:
- Deprecation of the docsDevFilter group in favor of the
DiffServ MIB groups, to enable support for IPv6
filtering and DiffServ Code Point (DSCP) marking.
- Deprecation of the docsDevCpeGroup in favor of the
docsDevCpeInetGroup, to enable support of IPv6.
- Addition of various InetAddress objects to enable
support of IPv6.
- Deprecation of docsDevNmAccessTable in favor of SNMP
Coexistence and SNMPv3 -- yet adding
docsDevNmAccessTrapVersion and clarifying
docsDevNmAccessIp for current use of this table,
- Addition of docsDevIgmpModeControl for management and
control of the IGMP mode of operation,
- Addition of docsDevMaxCpe for management of the
maxmium number of CPEs permitted access through a
cable modem,
- Addition of docsDevSwServerTransportProtocol, and
modifications to docsDevSoftware object DESCRIPTIONS,
to enable software downloads via either TFTP or HTTP,
- Replacement of docsDevEvThrottleInhibited with
docsDevEvThrottleThresholdExceeded to simplify
event threshold management,
- Modification of docsDevEvReporting to enable local
logging to the internal volatile log, and not to the
internal non-volatile log,
- Modification of the compliance statement to make the
docsDevCpe objects optional
- Created placeholders for two OIDs in the
docsDevFilterPolicyTable that were never used
- Modified the DESCRIPTION of
docsDevSwServerTransportProtocol and
docsDevSwServerAddressType to address the
dependence between each object
- Added a reference to docsDevServerConfigTftpAddress
- Clarified the scope of notifications that are covered
by docsDevEvThrottleThreshold
- Clarified an error condition that could occur when
Woundy & Marez Standards Track PAGE 15
RFC 4639 DOCSIS Cable Device MIB December 2006
doing a SET to docsDevEvReporting
- Defined each of the enumerated types for both
docsDevEvLevel and docsDevEvPriority
- Added UNITS clause to docsDevFilterLLCMatches,
docsDevFilterIpMatches, docsDevMaxCpe,
docsDevEvThrottleThreshold and docsDevEvCounts.
- Added REFERENCE clause to docsDevFilterIpProtocol
- Modified DESCRIPTION of docsDevCpeInetAddr to be
more protocol-neutral
- Removed the enumerated value (1) from both
docsDevCpeInetSource and docsDevCpeSource
- Covered additional read-write and read-create objects
in the Security Considerations section
- Modified the default value of docsDevNmAccessIpMask
to be consistent with OSSI specification
- Modified the SYNTAX of docsDevNmAccessCommunity and
docsDevNmAccessInterfaces in the Conformance
Statement section
- Added SYNTAX clause to docsDevEvReporting in the
Conformance Statement section
- Modified SYNTAX clause of docsDevEvReporting to
move new enumerated type to byte boundary
- Added references to DOCSIS 2.0 specifications to
multiple objects
- Clarified non-persistency across reboots for
all tables
- Clarified functionality of docsDevSw objects as
they relate to docsDevSwOperStatus
- Clarified enumerated types (9) and (10) for
docsDevServerBootState
- Defined the state of unknown(0) for the following
objects: docsDevServerDhcpAddressType,
docsDevServerTimeAddressType,
docsDevServerConfigTftpAddressType and
docsDevServerConfigTftpAddressType
- Modified the value in docsDevFilterIpDaddr to be
consistent with the SYNTAX
- Specified which rows could be modified in an
active row for docsDevFilterPolicyStatus
- Defined the term 'manually' in docsDevCpeEnroll
- Clarified the description for
docsDevFilterTosOrMask
- Covered the case of a non-existent row for
docsDevFilterPolicyPtr
- Added DEFVAL clauses for multiple objects
- Replaced docsDevNotification OBJECT IDENTIFIER
with docsDevNotifications to address possible
compatibility issues
Woundy & Marez Standards Track PAGE 16
RFC 4639 DOCSIS Cable Device MIB December 2006
- Added support for the usage of RFC 3413 and RFC 3014
as event notification mechanisms
- Removed docsDevFilterPolicyObsoleteGroup
- Added stdInterface(9) type to docsDevEvReporting to
support the usage of RFC 3413 and RFC 3014
- Modified DESCRIPTION for docsDevMaxCpe"
REVISION "199908190000Z"
DESCRIPTION
"Initial version, published as RFC 2669."
::= { mib-2 69 }
docsDevMIBObjects OBJECT IDENTIFIER ::= { docsDev 1 }
docsDevBase OBJECT IDENTIFIER ::= { docsDevMIBObjects 1 }
--
-- For the following object, there is no concept in the
-- RFI specification corresponding to a backup CMTS. The
-- enumeration is provided here in case someone is able
-- to define such a role or device.
--
docsDevRole OBJECT-TYPE
SYNTAX INTEGER {
cm(1),
cmtsActive(2),
cmtsBackup(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Defines the current role of this device. cm(1) is a
Cable Modem, cmtsActive(2) is a Cable Modem Termination
System that is controlling the system of cable modems,
and cmtsBackup(3) is a CMTS that is currently connected
but is not controlling the system (not currently used).
In general, if this device is a 'cm', its role will not
change during operation or between reboots. If the
device is a 'cmts' it may change between cmtsActive and
cmtsBackup and back again during normal operation. NB:
At this time, the DOCSIS standards do not support the
concept of a backup CMTS, but cmtsBackup is included for
completeness."
::= { docsDevBase 1 }
Woundy & Marez Standards Track PAGE 17
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevDateTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The current date and time, with time zone information
(if known).
If the real data and time cannot be determined, this
shall represent elapsed time from boot relative to
the standard epoch '1970-1-1,0:0:0.0'. In other
words, if this agent has been up for 3 minutes and
not been able to determine what the actual date and
time are, this object will return the value
'1970-1-1,0:03:0.0'."
::= { docsDevBase 2 }
docsDevResetNow OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Setting this object to true(1) causes the device to
reset. Reading this object always returns false(2)."
::= { docsDevBase 3 }
docsDevSerialNumber OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The manufacturer's serial number for this device."
::= { docsDevBase 4 }
docsDevSTPControl OBJECT-TYPE
SYNTAX INTEGER {
stEnabled(1),
noStFilterBpdu(2),
noStPassBpdu(3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls operation of the spanning tree
protocol (as distinguished from transparent bridging).
If set to stEnabled(1), then the spanning tree protocol
is enabled, subject to bridging constraints.
Woundy & Marez Standards Track PAGE 18
RFC 4639 DOCSIS Cable Device MIB December 2006
If noStFilterBpdu(2), then spanning tree is not active,
and Bridge PDUs received are discarded.
If noStPassBpdu(3), then spanning tree is not active,
and Bridge PDUs are transparently forwarded.
Note that a device need not implement all of these
options, but that noStFilterBpdu(2) is required."
DEFVAL { noStFilterBpdu }
::= { docsDevBase 5 }
docsDevIgmpModeControl OBJECT-TYPE
SYNTAX INTEGER {
passive(1),
active(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the IGMP mode of operation for
the CM or CMTS. In passive mode, the device forwards
IGMP between interfaces as based on knowledge of
Multicast Session activity on the subscriber side
interface and the rules defined in the DOCSIS RFI
specification. In active mode, the device terminates
at and initiates IGMP through its interfaces as based
on the knowledge of Multicast Session activity on the
subscriber side interface."
REFERENCE
"DOCSIS RFI 1.1 Specification, Section 3.3.1. and
DOCSIS RFI 2.0 Specification, Section 5.3.1."
DEFVAL { passive }
::= { docsDevBase 6 }
docsDevMaxCpe OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
UNITS "CPEs"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of CPEs that can be granted access
through a CM during a CM epoch. This value can be
obtained from the CM configuration file; however,
it may be adjusted by the CM according to hardware or
software limitations that have been imposed on the
implementation."
REFERENCE
"DOCSIS RFI 1.0 Specification, Appendix C.7.20., and
Woundy & Marez Standards Track PAGE 19
RFC 4639 DOCSIS Cable Device MIB December 2006
DOCSIS RFI 1.1 Specification, Appendix C.1.1.7. and
DOCSIS RFI 2.0 Specification, Appendix C.1.1.7."
::= { docsDevBase 7 }
--
-- The following table provides one level of security for access
-- to the device by network management stations.
-- Note that access is also constrained by the
-- community strings and any vendor-specific security.
--
docsDevNmAccessTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevNmAccessEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"This table controls access to SNMP objects by network
management stations. If the table is empty, access to
SNMP objects is unrestricted. The objects in this table
MUST NOT persist across reboots. The objects in this
table are only accessible from cable devices that are
not capable of operating in SNMP Coexistence mode
(RFC 3584) or in SNMPv3 mode (RFC 3410).
See the conformance section for
details. Note that some devices are required by other
specifications (e.g., the DOCSIS OSSIv1.1 specification)
to support the legacy SNMPv1/v2c docsDevNmAccess mode
for backward compatibility.
This table is deprecated. Instead, use the SNMP
coexistence MIBs from RFC 3584, the TARGET and
NOTIFICATION MIBs from RFC 3413, and
the View-Based Access Control Model (VACM) MIBs for
all SNMP protocol versions from RFC 3415."
::= { docsDevMIBObjects 2 }
docsDevNmAccessEntry OBJECT-TYPE
SYNTAX DocsDevNmAccessEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"An entry describing access to SNMP objects by a
particular network management station. An entry in
this table is not readable unless the management station
has read-write permission (either implicit if the table
is empty, or explicit through an entry in this table).
Entries are ordered by docsDevNmAccessIndex. The first
Woundy & Marez Standards Track PAGE 20
RFC 4639 DOCSIS Cable Device MIB December 2006
matching entry (e.g., matching IP address and community
string) is used to derive access."
INDEX { docsDevNmAccessIndex }
::= { docsDevNmAccessTable 1 }
DocsDevNmAccessEntry ::= SEQUENCE {
docsDevNmAccessIndex Integer32,
docsDevNmAccessIp IpAddress,
docsDevNmAccessIpMask IpAddress,
docsDevNmAccessCommunity OCTET STRING,
docsDevNmAccessControl INTEGER,
docsDevNmAccessInterfaces OCTET STRING,
docsDevNmAccessStatus RowStatus,
docsDevNmAccessTrapVersion INTEGER
}
docsDevNmAccessIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"Index used to order the application of access
entries."
::= { docsDevNmAccessEntry 1 }
docsDevNmAccessIp OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The IP address (or subnet) of the network management
station. The address 0.0.0.0 is defined to mean
any Network Management Station (NMS). If traps are
enabled for this entry, then the value must be the
address of a specific device. Implementations MAY
recognize 255.255.255.255 as equivalent to 0.0.0.0."
DEFVAL { '00000000'h }
::= { docsDevNmAccessEntry 2 }
docsDevNmAccessIpMask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The IP subnet mask of the network management stations.
If traps are enabled for this entry, then the value must
be 0.0.0.0. Implementations MAY recognize
255.255.255.255 as equivalent to 0.0.0.0."
Woundy & Marez Standards Track PAGE 21
RFC 4639 DOCSIS Cable Device MIB December 2006
DEFVAL { '00000000'h }
::= { docsDevNmAccessEntry 3 }
docsDevNmAccessCommunity OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The community string to be matched for access by this
entry. If set to a zero-length string, then any
community string will match. When read, this object
SHOULD return a zero-length string."
DEFVAL { "public" }
::= { docsDevNmAccessEntry 4 }
docsDevNmAccessControl OBJECT-TYPE
SYNTAX INTEGER {
none(1),
read(2),
readWrite(3),
roWithTraps(4),
rwWithTraps(5),
trapsOnly(6)
}
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Specifies the type of access allowed to this NMS.
Setting this object to none(1) causes the table entry
to be destroyed. Read(2) allows access by 'get' and
'get-next' PDUs. ReadWrite(3) allows access by 'set' as
well. RoWithtraps(4), rwWithTraps(5), and trapsOnly(6)
control distribution of Trap PDUs transmitted by this
device."
DEFVAL { read }
::= { docsDevNmAccessEntry 5 }
-- The syntax of the following object was copied from RFC 1493,
-- dot1dStaticAllowedToGoTo.
docsDevNmAccessInterfaces OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1..32))
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Specifies the set of interfaces from which requests from
this NMS will be accepted. Each octet within
the value of this object specifies a set of eight
Woundy & Marez Standards Track PAGE 22
RFC 4639 DOCSIS Cable Device MIB December 2006
interfaces, the first octet specifying ports 1
through 8, the second octet specifying interfaces 9
through 16, etc. Within each octet, the most
significant bit represents the lowest numbered
interface, and the least significant bit represents the
highest numbered interface. Thus, each interface is
represented by a single bit within the value of this
object. If that bit has a value of '1' then that
interface is included in the set.
Note that entries in this table apply only to link-layer
interfaces (e.g., Ethernet and CATV MAC). Bits
representing upstream and downstream channel interfaces
MUST NOT be set to '1'.
Note that if bits corresponding to non-existing
interfaces are set, the result is implementation
specific.
Note that according to the DOCSIS OSSIv1.1
specification, when ifIndex '1' is included in the
set, then this row applies to all CPE
(customer-facing) interfaces.
The size of this object is the minimum required to
represent all configured interfaces for this device."
::= { docsDevNmAccessEntry 6 }
docsDevNmAccessStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Controls and reflects the status of rows in this
table. Rows in this table may be created by either the
create-and-go or create-and-wait paradigm. There is no
restriction on changing values in a row of this table
while the row is active.
The following objects MUST have valid values before this
object can be set to active: docsDevNmAccessIp,
docsDevNmAccessStatus, docsDevNmAccessIpMask,
docsDevNmAccessCommunity, docsDevNmAccessControl, and
docsDevNmAccessInterfaces."
::= { docsDevNmAccessEntry 7 }
docsDevNmAccessTrapVersion OBJECT-TYPE
SYNTAX INTEGER {
Woundy & Marez Standards Track PAGE 23
RFC 4639 DOCSIS Cable Device MIB December 2006
disableSNMPv2trap(1),
enableSNMPv2trap(2)
}
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Specifies the TRAP version that is sent to this NMS.
Setting this object to disableSNMPv2trap (1) causes the
trap in SNMPv1 format to be sent to a particular NMS.
Setting this object to enableSNMPv2trap (2) causes the
trap in SNMPv2 format be sent to a particular NMS."
DEFVAL { disableSNMPv2trap }
::= { docsDevNmAccessEntry 8 }
--
-- The following group describes control objects used for downloading
-- firmware to a cable device. Procedures for software download are
-- described in Section 3.2.1 of the RFC containing this MIB module.
--
docsDevSoftware OBJECT IDENTIFIER ::= { docsDevMIBObjects 3 }
docsDevSwServer OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-write
STATUS deprecated
DESCRIPTION
"The address of the TFTP server used for software
upgrades. If the TFTP server is unknown or is a
non-IPv4 address, return 0.0.0.0.
This object is deprecated. See docsDevSwServerAddress
for its replacement. This object will have its value
modified, given a valid SET to docsDevSwServerAddress."
::= { docsDevSoftware 1 }
docsDevSwFilename OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..64))
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The filename of the software image to be downloaded via
TFTP, or the abs_path (as defined in RFC 2616) of the
software image to be downloaded via HTTP.
Unless set via SNMP, this is the filename or abs_path
specified by the provisioning server during the boot
process that corresponds to the software version that
Woundy & Marez Standards Track PAGE 24
RFC 4639 DOCSIS Cable Device MIB December 2006
is desired for this device.
If unknown, the value of this object is the zero-length
string."
::= { docsDevSoftware 2 }
docsDevSwAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
upgradeFromMgt(1),
allowProvisioningUpgrade(2),
ignoreProvisioningUpgrade(3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"If set to upgradeFromMgt(1), the device will initiate a
TFTP or HTTP software image download. After
successfully receiving an image, the device will set
its state to ignoreProvisioningUpgrade(3) and reboot.
If the download process is interrupted (e.g., by a reset
or power failure), the device will load the previous
image and, after re-initialization, continue to attempt
loading the image specified in docsDevSwFilename.
If set to allowProvisioningUpgrade(2), the device will
use the software version information supplied by the
provisioning server when next rebooting (this does not
cause a reboot).
When set to ignoreProvisioningUpgrade(3), the device
will disregard software image upgrade information
from the provisioning server.
Note that reading this object can return
upgradeFromMgt(1). This indicates that a software
download is currently in progress, and that the device
will reboot after successfully receiving an image."
DEFVAL { allowProvisioningUpgrade }
::= { docsDevSoftware 3 }
docsDevSwOperStatus OBJECT-TYPE
SYNTAX INTEGER {
inProgress(1),
completeFromProvisioning(2),
completeFromMgt(3),
failed(4),
other(5)
}
Woundy & Marez Standards Track PAGE 25
RFC 4639 DOCSIS Cable Device MIB December 2006
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"InProgress(1) indicates that a TFTP or HTTP download is
underway, either as a result of a version mismatch at
provisioning or as a result of a upgradeFromMgt request.
No other docsDevSw* objects can be modified in
this state.
CompleteFromProvisioning(2) indicates that the last
software upgrade was a result of version mismatch at
provisioning.
CompleteFromMgt(3) indicates that the last software
upgrade was a result of setting docsDevSwAdminStatus to
upgradeFromMgt.
Failed(4) indicates that the last attempted download
failed, ordinarily due to TFTP or HTTP timeout."
REFERENCE
"DOCSIS RFI 1.0 Specification, Section 8.2., and
DOCSIS RFI 1.1 Specification, Section 10.1. and
DOCSIS RFI 2.0 Specification, Section 12.1."
::= { docsDevSoftware 4 }
docsDevSwCurrentVers OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The software version currently operating in this device.
This string's syntax is that used by the
individual vendor to identify software versions.
For a CM, this string will describe the current
software load. For a CMTS, this object SHOULD contain
a human-readable representation either of the vendor
specific designation of the software for the chassis,
or of the software for the control processor. If
neither of these is applicable, the value MUST be a
zero-length string."
::= { docsDevSoftware 5 }
docsDevSwServerAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The type of address of the TFTP or HTTP server used for
Woundy & Marez Standards Track PAGE 26
RFC 4639 DOCSIS Cable Device MIB December 2006
software upgrades.
If docsDevSwServerTransportProtocol is currently set to
tftp(1), attempting to set this object to dns(16) MUST
result in an error."
::= { docsDevSoftware 6 }
docsDevSwServerAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The address of the TFTP or HTTP server used for software
upgrades.
If the TFTP/HTTP server is unknown, return the zero-
length address string (see the TextualConvention).
If docsDevSwServer is also implemented in this agent,
this object is tied to it. A set of this object to an
IPv4 address will result in also setting the value of
docsDevSwServer to that address. If this object is set
to an IPv6 address, docsDevSwServer is set to 0.0.0.0.
If docsDevSwServer is set, this object is also set to
that value. Note that if both are set in the same
action, the order of which one sets the other is
undefined."
::= { docsDevSoftware 7 }
docsDevSwServerTransportProtocol OBJECT-TYPE
SYNTAX INTEGER {
tftp(1),
http(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object specifies the transport protocol (TFTP or
HTTP) to be used for software upgrades.
If the value of this object is tftp(1), then the cable
device uses TFTP (RFC 1350) read request packets to
download the docsDevSwFilename from the
docsDevSwServerAddress in octet mode.
If the value of this object is http(2), then the cable
device uses HTTP 1.0 (RFC 1945) or HTTP 1.1 (RFC 2616)
GET requests sent to host docsDevSwServerAddress to
Woundy & Marez Standards Track PAGE 27
RFC 4639 DOCSIS Cable Device MIB December 2006
download the software image from path docsDevSwFilename.
If docsDevSwServerAddressType is currently set to
dns(16), attempting to set this object to tftp(1) MUST
result in an error."
DEFVAL { tftp }
::= { docsDevSoftware 8 }
--
-- The following group describes server access and parameters used
-- for initial provisioning and bootstrapping.
--
docsDevServer OBJECT IDENTIFIER ::= { docsDevMIBObjects 4 }
docsDevServerBootState OBJECT-TYPE
SYNTAX INTEGER {
operational(1),
disabled(2),
waitingForDhcpOffer(3),
waitingForDhcpResponse(4),
waitingForTimeServer(5),
waitingForTftp(6),
refusedByCmts(7),
forwardingDenied(8),
other(9),
unknown(10)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If operational(1), the device has completed loading and
processing of configuration parameters, and the CMTS has
completed the Registration exchange.
If disabled(2), then the device was administratively
disabled, possibly by being refused network access in
the configuration file.
If waitingForDhcpOffer(3), then a Dynamic Host
Configuration Protocol (DHCP) Discover has been
transmitted, and no offer has yet been received.
If waitingForDhcpResponse(4), then a DHCP Request has
been transmitted, and no response has yet been received.
If waitingForTimeServer(5), then a Time Request has been
transmitted, and no response has yet been received.
Woundy & Marez Standards Track PAGE 28
RFC 4639 DOCSIS Cable Device MIB December 2006
If waitingForTftp(6), then a request to the TFTP
parameter server has been made, and no response
received.
If refusedByCmts(7), then the Registration
Request/Response exchange with the CMTS failed.
If forwardingDenied(8), then the registration process
was completed, but the network access option in the
received configuration file prohibits forwarding.
If other(9), then the registration process reached a
point that does not fall into one of the above
categories.
If unknown(10), then the device has not yet begun the
registration process or is in some other indeterminate
state."
REFERENCE
"DOCSIS RFI 1.0 Specification, Figure 7-1, and
DOCSIS RFI 1.1 Specification, Figure 9-1 and
DOCSIS RFI 2.0 Specification, Figure 11-1."
::= { docsDevServer 1 }
docsDevServerDhcp OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The IP address of the DHCP server that assigned an IP
address to this device. Returns 0.0.0.0 if DHCP is not
used for IP address assignment, or if this agent is
not assigned an IPv4 address.
This object is deprecated and is replaced by
docsDevServerDhcpAddress."
::= { docsDevServer 2 }
docsDevServerTime OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The IP address of the Time server (RFC 868). Returns
0.0.0.0 if the time server IP address is unknown, or if
the time server is not an IPv4 server.
This object is deprecated and is replaced by
Woundy & Marez Standards Track PAGE 29
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevServerTimeAddress."
::= { docsDevServer 3 }
docsDevServerTftp OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The IP address of the TFTP server responsible for
downloading provisioning and configuration parameters
to this device. Returns 0.0.0.0 if the TFTP server
address is unknown or is not an IPv4 address.
This object is deprecated and is replaced by
docsDevServerConfigTftpAddress."
::= { docsDevServer 4 }
docsDevServerConfigFile OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The name of the device configuration file read from
the TFTP server. Returns a zero-length string if
the configuration file name is unknown."
::= { docsDevServer 5 }
docsDevServerDhcpAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of address of docsDevServerDhcpAddress. If
DHCP was not used, this value should return
unknown(0)."
::= { docsDevServer 6 }
docsDevServerDhcpAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internet address of the DHCP server that assigned
an IP address to this device. Returns the zero length
octet string if DHCP was not used for IP address
assignment."
::= { docsDevServer 7 }
Woundy & Marez Standards Track PAGE 30
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevServerTimeAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of address of docsDevServerTimeAddress. If
no time server exists, this value should return
unknown(0)."
::= { docsDevServer 8 }
docsDevServerTimeAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Internet address of the RFC 868 Time server,
as provided by DHCP option 4.
Note that if multiple values are provided to the
CM in DHCP option 4, the value of this MIB object
MUST be the Time server address from which the Time
of Day reference was acquired as based on the DOCSIS
RFI specification. During the period of time where
the Time of Day have not been acquired, the Time
server address reported by the CM may report the
first address value in the DHCP option value or the
last server address the CM attempted to get the Time
of day value.
Returns the zero-length octet string if the time server
IP address is not provisioned."
REFERENCE
"DOCSIS RFI 1.1 Specification, Section 9.2.7. and
DOCSIS RFI 2.0 Specification, Section 11.2.7."
::= { docsDevServer 9 }
docsDevServerConfigTftpAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of address of docsDevServerConfigTftpAddress.
If no TFTP server exists, this value should return
unknown(0)."
::= { docsDevServer 10 }
docsDevServerConfigTftpAddress OBJECT-TYPE
SYNTAX InetAddress
Woundy & Marez Standards Track PAGE 31
RFC 4639 DOCSIS Cable Device MIB December 2006
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internet address of the TFTP server responsible for
downloading provisioning and configuration parameters
to this device. Returns the zero-length octet string if
the config server address is unknown. There are certain
security risks that are involved with using TFTP."
REFERENCE
"RFC 3617, Section 5"
::= { docsDevServer 11 }
--
-- Event Reporting
--
docsDevEvent OBJECT IDENTIFIER ::= { docsDevMIBObjects 5 }
docsDevEvControl OBJECT-TYPE
SYNTAX INTEGER {
resetLog(1),
useDefaultReporting(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Setting this object to resetLog(1) empties the event
log. All data is deleted. Setting it to
useDefaultReporting(2) returns all event priorities to
their factory-default reporting. Reading this object
always returns useDefaultReporting(2)."
::= { docsDevEvent 1 }
docsDevEvSyslog OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-write
STATUS deprecated
DESCRIPTION
"The IP address of the Syslog server. If 0.0.0.0, either
syslog transmission is inhibited, or the Syslog server
address is not an IPv4 address.
This object is deprecated and is replaced by
docsDevEvSyslogAddress."
::= { docsDevEvent 2 }
docsDevEvThrottleAdminStatus OBJECT-TYPE
Woundy & Marez Standards Track PAGE 32
RFC 4639 DOCSIS Cable Device MIB December 2006
SYNTAX INTEGER {
unconstrained(1),
maintainBelowThreshold(2),
stopAtThreshold(3),
inhibited(4)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Controls the transmission of traps and syslog messages
with respect to the trap pacing threshold.
unconstrained(1) causes traps and syslog messages to be
transmitted without regard to the threshold settings.
maintainBelowThreshold(2) causes trap transmission and
syslog messages to be suppressed if the number of traps
would otherwise exceed the threshold.
stopAtThreshold(3) causes trap transmission to cease at
the threshold and not to resume until directed to do so.
inhibited(4) causes all trap transmission and syslog
messages to be suppressed.
A single event is always treated as a single event for
threshold counting. That is, an event causing both a
trap and a syslog message is still treated as a single
event.
Writing to this object resets the thresholding state."
DEFVAL { unconstrained }
::= { docsDevEvent 3 }
docsDevEvThrottleInhibited OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"If true(1), trap and syslog transmission is currently
inhibited due to thresholds and/or the current setting
of docsDevEvThrottleAdminStatus. In addition, this is
true(1) when transmission is inhibited because no
syslog (docsDevEvSyslog) or trap (docsDevNmAccessEntry)
destinations have been set.
This object is deprecated and is replaced by
docsDevEvThrottleThresholdExceeded."
Woundy & Marez Standards Track PAGE 33
RFC 4639 DOCSIS Cable Device MIB December 2006
::= { docsDevEvent 4 }
docsDevEvThrottleThreshold OBJECT-TYPE
SYNTAX Unsigned32
UNITS "events"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Number of events per docsDevEvThrottleInterval permitted
before throttling is to occur.
A single event, whether the notification could result in
messages transmitted using syslog, SNMP, or both
protocols, and regardless of the number of destinations,
(including zero) is always treated as a single event for
threshold counting. For example, an event causing both
a trap and a syslog message is still treated as a single
event.
All system notifications that occur within the device
should be taken into consideration when calculating
and monitoring the threshold."
DEFVAL { 0 }
::= { docsDevEvent 5 }
docsDevEvThrottleInterval OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The interval over which docsDevEvThrottleThreshold
applies."
DEFVAL { 1 }
::= { docsDevEvent 6 }
--
-- The following table controls the reporting of the various classes
-- of events.
--
docsDevEvControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevEvControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table allows control of the reporting of event
classes. For each event priority, a combination of
Woundy & Marez Standards Track PAGE 34
RFC 4639 DOCSIS Cable Device MIB December 2006
logging and reporting mechanisms may be chosen. The
mapping of event types to priorities is
vendor dependent. Vendors may also choose to allow
the user to control that mapping through proprietary
means. Table entries MUST persist across reboots for
CMTS devices and MUST NOT persist across reboots for CM
devices."
::= { docsDevEvent 7 }
docsDevEvControlEntry OBJECT-TYPE
SYNTAX DocsDevEvControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Allows configuration of the reporting mechanisms for a
particular event priority."
INDEX { docsDevEvPriority }
::= { docsDevEvControlTable 1 }
DocsDevEvControlEntry ::= SEQUENCE {
docsDevEvPriority INTEGER,
docsDevEvReporting BITS
}
docsDevEvPriority OBJECT-TYPE
SYNTAX INTEGER {
emergency(1),
alert(2),
critical(3),
error(4),
warning(5),
notice(6),
information(7),
debug(8)
}
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The priority level that is controlled by this
entry. These are ordered from most (emergency) to least
(debug) critical. Each event with a CM or CMTS has a
particular priority level associated with it (as defined
by the vendor).
emergency(1) events indicate vendor-specific fatal
hardware or software errors that prevent normal system
operation.
Woundy & Marez Standards Track PAGE 35
RFC 4639 DOCSIS Cable Device MIB December 2006
alert(2) events indicate a serious failure that causes
the reporting system to reboot but is not caused by
hardware or software malfunctioning.
critical(3) events indicate a serious failure that
requires attention and prevents the device from
transmitting data but that could be recovered without
rebooting the system.
error(4) and warning(5) events indicate that a failure
occurred that could interrupt the normal data flow but
that does not cause the device to re-register.
notice(6) and information(7) events indicate a
milestone or checkpoint in normal operation that could
be of particular importance for troubleshooting.
debug(8) events are reserved for vendor-specific
events.
During normal operation, no event more
critical than notice(6) should be generated. Events
between warning and emergency should be generated at
appropriate levels of problems (e.g., emergency when the
box is about to crash)."
::= { docsDevEvControlEntry 1 }
docsDevEvReporting OBJECT-TYPE
SYNTAX BITS {
local(0),
traps(1),
syslog(2),
-- The following are extensions to the original set of
-- labels. The extensions start at an octet boundary.
-- So for bits 3 - 7, one MUST set them to zero on send
-- and one MUST ignore them on receipt.
localVolatile(8),
stdInterface(9)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Defines the action to be taken on occurrence of this
event class. Implementations may not necessarily
support all options for all event classes but at
minimum must allow traps and syslogging to be
disabled.
Woundy & Marez Standards Track PAGE 36
RFC 4639 DOCSIS Cable Device MIB December 2006
If the local(0) bit is set, then log to the internal
log and update non-volatile store, for backward
compatibility with the original RFC 2669 definition.
If the traps(1) bit is set, then generate
an SNMP trap; if the syslog(2) bit is set, then
send a syslog message (assuming that the syslog address
is set). If the localVolatile(8) bit is set, then
log to the internal log without updating non-volatile
store. If the stdInterface(9) bit is set, then the
agent ignores all other bits except the local(0),
syslog(2), and localVolatile(8) bits. Setting the
stdInterface(9) bit indicates that RFC 3413 and
RFC 3014 are being used to control event reporting
mechanisms."
::= { docsDevEvControlEntry 2 }
docsDevEventTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevEventEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Contains a log of network and device events that may be
of interest in fault isolation and troubleshooting.
If the local(0) bit is set in docsDevEvReporting,
entries in this table MUST persist across reboots."
::= { docsDevEvent 8 }
docsDevEventEntry OBJECT-TYPE
SYNTAX DocsDevEventEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a network or device event that may be of
interest in fault isolation and troubleshooting.
Multiple sequential identical events are represented by
incrementing docsDevEvCounts and setting
docsDevEvLastTime to the current time rather than
creating multiple rows.
Entries are created with the first occurrence of an
event. docsDevEvControl can be used to clear the
table. Individual events cannot be deleted."
INDEX { docsDevEvIndex }
::= { docsDevEventTable 1 }
DocsDevEventEntry ::= SEQUENCE {
docsDevEvIndex Integer32,
docsDevEvFirstTime DateAndTime,
Woundy & Marez Standards Track PAGE 37
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevEvLastTime DateAndTime,
docsDevEvCounts Counter32,
docsDevEvLevel INTEGER,
docsDevEvId Unsigned32,
docsDevEvText SnmpAdminString
}
docsDevEvIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Provides relative ordering of the objects in the event
log. This object will always increase except when
(a) the log is reset via docsDevEvControl,
(b) the device reboots and does not implement
non-volatile storage for this log, or (c) it reaches
the value 2^31. The next entry for all the above
cases is 1."
::= { docsDevEventEntry 1 }
docsDevEvFirstTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of docsDevDateTime at the time this entry was
created."
::= { docsDevEventEntry 2 }
docsDevEvLastTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"When an entry reports only one event, this object will
have the same value as the corresponding instance of
docsDevEvFirstTime. When an entry reports multiple
events, this object will record the value that
docsDevDateTime had when the most recent event for this
entry occurred."
::= { docsDevEventEntry 3 }
-- This object was renamed from docsDevEvCount to meet naming
-- requirements for Counter32
docsDevEvCounts OBJECT-TYPE
SYNTAX Counter32
UNITS "events"
Woundy & Marez Standards Track PAGE 38
RFC 4639 DOCSIS Cable Device MIB December 2006
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of consecutive event instances reported by
this entry. This starts at 1 with the creation of this
row and increments by 1 for each subsequent duplicate
event."
::= { docsDevEventEntry 4 }
docsDevEvLevel OBJECT-TYPE
SYNTAX INTEGER {
emergency(1),
alert(2),
critical(3),
error(4),
warning(5),
notice(6),
information(7),
debug(8)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The priority level of this event, as defined by the
vendor. These are ordered from most serious (emergency)
to least serious (debug).
emergency(1) events indicate vendor-specific fatal
hardware or software errors that prevent normal system
operation.
alert(2) events indicate a serious failure that causes
the reporting system to reboot but that is not caused by
hardware or software malfunctioning.
critical(3) events indicate a serious failure that
requires attention and prevents the device from
transmitting data but that could be recovered without
rebooting the system.
error(4) and warning(5) events indicate that a failure
occurred that could interrupt the normal data flow but
that does not cause the device to re-register.
notice(6) and information(7) events indicate a
milestone or checkpoint in normal operation that could
be of particular importance for troubleshooting.
debug(8) events are reserved for vendor-specific
Woundy & Marez Standards Track PAGE 39
RFC 4639 DOCSIS Cable Device MIB December 2006
events.
During normal operation, no event more
critical than notice(6) should be generated. Events
between warning and emergency should be generated at
appropriate levels of problems (e.g., emergency when the
box is about to crash)."
::= { docsDevEventEntry 5 }
--
-- It is strongly recommended that implementors follow the CableLabs
-- enumerations for docsDevEvId, per the DOCSIS OSSIv1.1 spec
-- and follow-on specifications.
--
docsDevEvId OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For this product, uniquely identifies the type of event
that is reported by this entry."
REFERENCE
"DOCSIS OSSI 1.1 Specification, Appendix H and
DOCSIS OSSI 2.0 Specification, Annex D."
::= { docsDevEventEntry 6 }
docsDevEvText OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Provides a human-readable description of the event,
including all relevant context (interface numbers,
etc.)."
::= { docsDevEventEntry 7 }
docsDevEvSyslogAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The type of address of docsDevEvSyslogAddress. If
no syslog server exists, this value should return
unknown(0)."
DEFVAL { unknown }
::= { docsDevEvent 9 }
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RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevEvSyslogAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The Internet address of the Syslog server, as provided
by DHCP option 7 or set via SNMP management. If the
address of the server is set to the zero-length
string, the 0.0.0.0 IPv4 address, or the 0: IPv6
address, Syslog transmission is inhibited.
Note that if multiple values are provided to the CM in
DHCP option 7, the value of this MIB object MUST be the
first Syslog server address received.
By default at agent boot, this object returns the zero
length string."
::= { docsDevEvent 10 }
docsDevEvThrottleThresholdExceeded OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If true(1), trap and syslog transmission is currently
inhibited due to exceeding the trap/syslog event
threshold in the current interval."
::= { docsDevEvent 11 }
--
-- Link Level Control Filtering
--
docsDevFilter OBJECT IDENTIFIER ::= { docsDevMIBObjects 6 }
docsDevFilterLLCUnmatchedAction OBJECT-TYPE
SYNTAX INTEGER {
discard(1),
accept(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"LLC (Link Level Control) filters can be defined on an
inclusive or exclusive basis: CMs can be configured to
forward only packets matching a set of layer three
protocols, or to drop packets matching a set of layer
three protocols. Typical use of these filters is to
Woundy & Marez Standards Track PAGE 41
RFC 4639 DOCSIS Cable Device MIB December 2006
filter out possibly harmful (given the context of a
large metropolitan LAN) protocols.
If set to discard(1), any L2 packet that does not match
at least one filter in the docsDevFilterLLCTable will be
discarded. If set to accept(2), any L2 packet that
does not match at least one filter in the
docsDevFilterLLCTable will be accepted for further
processing (e.g., bridging). In other words, if the
packet does not match an entry in the table, it takes
this action; if it does match an entry in the table, it
takes the opposite of this action."
DEFVAL { accept }
::= { docsDevFilter 1 }
docsDevFilterLLCTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterLLCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of filters to apply to (bridged) LLC
traffic. The filters in this table are applied to
incoming traffic on the appropriate interface(s) prior
to any further processing (e.g., before the packet
is handed off for level 3 processing, or for bridging).
The specific action taken when no filter is matched is
controlled by docsDevFilterLLCUnmatchedAction. Table
entries MUST NOT persist across reboots for any device."
::= { docsDevFilter 2 }
docsDevFilterLLCEntry OBJECT-TYPE
SYNTAX DocsDevFilterLLCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a single filter to apply to (bridged) LLC
traffic received on a specified interface. "
INDEX { docsDevFilterLLCIndex }
::= { docsDevFilterLLCTable 1 }
DocsDevFilterLLCEntry ::= SEQUENCE {
docsDevFilterLLCIndex Integer32,
docsDevFilterLLCStatus RowStatus,
docsDevFilterLLCIfIndex InterfaceIndexOrZero,
docsDevFilterLLCProtocolType INTEGER,
docsDevFilterLLCProtocol Integer32,
docsDevFilterLLCMatches Counter32
}
Woundy & Marez Standards Track PAGE 42
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevFilterLLCIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Index used for the identification of filters (note that
LLC filter order is irrelevant)."
::= { docsDevFilterLLCEntry 1 }
docsDevFilterLLCStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. There is no restriction on changing any of the
associated columns for this row while this object is set
to active.
Specifying only this object (with the
appropriate index) on a CM is sufficient to create a
filter row that matches all inbound packets on the
ethernet interface and results in the packets being
discarded. docsDevFilterLLCIfIndex (at least) must be
specified on a CMTS to create a row."
::= { docsDevFilterLLCEntry 2}
docsDevFilterLLCIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entry interface to which this filter applies. The
value corresponds to ifIndex for either a CATV MAC or
another network interface. If the value is zero, the
filter applies to all interfaces. In Cable Modems, the
default value is the customer side interface(s). In
CMTSs, this object has to be specified to
create a row in this table.
Note that according to the DOCSIS OSSIv1.1
specification, ifIndex '1' in the CM means that this
row applies to all Cable Modem-to-CPE Interfaces
(CMCI)."
REFERENCE
"DOCSIS OSSI 1.1 Specification, Section 3.3.4.1. and
DOCSIS OSSI 2.0 Specification, Section 6.3.4.1."
::= { docsDevFilterLLCEntry 3 }
Woundy & Marez Standards Track PAGE 43
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevFilterLLCProtocolType OBJECT-TYPE
SYNTAX INTEGER {
ethertype(1),
dsap(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The format of the value in docsDevFilterLLCProtocol:
either a two-byte Ethernet Ethertype, or a one-byte
802.2 Service Access Point (SAP) value. ethertype(1)
also applies to Standard Network Access Protocol
(SNAP) encapsulated frames."
DEFVAL { ethertype }
::= { docsDevFilterLLCEntry 4 }
docsDevFilterLLCProtocol OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The layer-three protocol for which this filter applies.
The protocol value format depends on
docsDevFilterLLCProtocolType. Note that for SNAP
frames, ethertype filtering is performed rather than
Destination Service Access Point (DSAP) =0xAA."
DEFVAL { 0 }
::= { docsDevFilterLLCEntry 5 }
docsDevFilterLLCMatches OBJECT-TYPE
SYNTAX Counter32
UNITS "matches"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Counts the number of times this filter was matched."
::= { docsDevFilterLLCEntry 6 }
--
-- IPv4 Filtering
--
docsDevFilterIpDefault OBJECT-TYPE
SYNTAX INTEGER {
discard(1),
accept(2)
}
MAX-ACCESS read-write
Woundy & Marez Standards Track PAGE 44
RFC 4639 DOCSIS Cable Device MIB December 2006
STATUS deprecated
DESCRIPTION
"The default behavior for (bridged) packets that do not
match IP filters (or Internet filters, if implemented)
is defined by docsDevFilterIpDefault.
If set to discard(1), all packets not matching an IP
filter in docsDevFilterIpTable will be discarded. If
set to accept(2), all packets not matching an IP filter
or an Internet filter will be accepted for further
processing (e.g., bridging)."
DEFVAL { accept }
::= { docsDevFilter 3 }
docsDevFilterIpTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterIpEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"An ordered list of filters or classifiers to apply to
IP traffic. Filter application is ordered by the filter
index, rather than by a best match algorithm (note that
this implies that the filter table may have gaps in the
index values). Packets that match no filters will have
policy 0 in the docsDevFilterPolicyTable applied to
them, if it exists. Otherwise, Packets that match no
filters are discarded or forwarded according to the
setting of docsDevFilterIpDefault.
Any IP packet can theoretically match multiple rows of
this table. When considering a packet, the table is
scanned in row index order (e.g., filter 10 is checked
before filter 20). If the packet matches that filter
(which means that it matches ALL criteria for that row),
actions appropriate to docsDevFilterIpControl and
docsDevFilterPolicyId are taken. If the packet was
discarded processing is complete. If
docsDevFilterIpContinue is set to true, the filter
comparison continues with the next row in the table,
looking for additional matches.
If the packet matches no filter in the table, the packet
is accepted or dropped for further processing
according to the setting of docsDevFilterIpDefault.
If the packet is accepted, the actions specified by
policy group 0 (e.g., the rows in
docsDevFilterPolicyTable that have a value of 0 for
docsDevFilterPolicyId) are taken, if that policy
Woundy & Marez Standards Track PAGE 45
RFC 4639 DOCSIS Cable Device MIB December 2006
group exists.
Logically, this table is consulted twice during the
processing of any IP packet: once upon its acceptance
from the L2 entity, and once upon its transmission to
the L2 entity. In actuality, for cable modems, IP
filtering is generally the only IP processing done for
transit traffic. This means that inbound and outbound
filtering can generally be done at the same time with
one pass through the filter table.
The objects in this table are only accessible from cable
devices that are not operating in DiffServ MIB mode
(RFC 3289). See the conformance section for details.
Note that some devices are required by other
specifications (e.g., the DOCSIS OSSIv1.1 specification)
to support the legacy SNMPv1/v2c docsDevFilter mode
for backward compatibility.
Table entries MUST NOT persist across reboots for any
device.
This table is deprecated. Instead, use the DiffServ MIB
from RFC 3289."
::= { docsDevFilter 4 }
docsDevFilterIpEntry OBJECT-TYPE
SYNTAX DocsDevFilterIpEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"Describes a filter to apply to IP traffic received on a
specified interface. All identity objects in this table
(e.g., source and destination address/mask, protocol,
source/dest port, TOS/mask, interface and direction)
must match their respective fields in the packet for
any given filter to match.
To create an entry in this table, docsDevFilterIpIfIndex
must be specified."
INDEX { docsDevFilterIpIndex }
::= { docsDevFilterIpTable 1 }
DocsDevFilterIpEntry ::= SEQUENCE {
docsDevFilterIpIndex Integer32,
docsDevFilterIpStatus RowStatus,
docsDevFilterIpControl INTEGER,
Woundy & Marez Standards Track PAGE 46
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevFilterIpIfIndex InterfaceIndexOrZero,
docsDevFilterIpDirection INTEGER,
docsDevFilterIpBroadcast TruthValue,
docsDevFilterIpSaddr IpAddress,
docsDevFilterIpSmask IpAddress,
docsDevFilterIpDaddr IpAddress,
docsDevFilterIpDmask IpAddress,
docsDevFilterIpProtocol Integer32,
docsDevFilterIpSourcePortLow Integer32,
docsDevFilterIpSourcePortHigh Integer32,
docsDevFilterIpDestPortLow Integer32,
docsDevFilterIpDestPortHigh Integer32,
docsDevFilterIpMatches ZeroBasedCounter32,
docsDevFilterIpTos OCTET STRING,
docsDevFilterIpTosMask OCTET STRING,
docsDevFilterIpContinue TruthValue,
docsDevFilterIpPolicyId Integer32
}
docsDevFilterIpIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"Index used to order the application of filters.
The filter with the lowest index is always applied
first."
::= { docsDevFilterIpEntry 1 }
docsDevFilterIpStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Controls and reflects the status of rows in this
table. Specifying only this object (with the
appropriate index) on a CM is sufficient to create a
filter row that matches all inbound packets on the
ethernet interface and results in the packets being
discarded. docsDevFilterIpIfIndex (at least) must be
specified on a CMTS to create a row. Creation of the
rows may be done via either create-and-wait or
create-and-go, but the filter is not applied until this
object is set to (or changes to) active. There is no
restriction in changing any object in a row while this
object is set to active."
::= { docsDevFilterIpEntry 2 }
Woundy & Marez Standards Track PAGE 47
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevFilterIpControl OBJECT-TYPE
SYNTAX INTEGER {
discard(1),
accept(2),
policy(3)
}
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"If set to discard(1), all packets matching this filter
will be discarded, and scanning of the remainder of the
filter list will be aborted. If set to accept(2), all
packets matching this filter will be accepted for
further processing (e.g., bridging). If
docsDevFilterIpContinue is set to true, see if there
are other matches; otherwise, done. If set to
policy (3), execute the policy entries
matched by docsDevFilterIpPolicyId in
docsDevFilterPolicyTable.
If docsDevFilterIpContinue is set to true, continue
scanning the table for other matches; otherwise, done."
DEFVAL { discard }
::= { docsDevFilterIpEntry 3 }
docsDevFilterIpIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The entry interface to which this filter applies. The
value corresponds to ifIndex for either a CATV MAC or
another interface. If the value is zero, the
filter applies to all interfaces. Default value in CMs
is the index of the customer-side (e.g., ethernet)
interface(s). In CMTSes, this object MUST be
specified to create a row in this table.
Note that according to the DOCSIS OSSIv1.1
specification, ifIndex '1' in the Cable Modem means
that this row applies to all CMCI (customer-facing)
interfaces."
REFERENCE
"DOCSIS OSSI 1.1 Specification, Section 3.3.4.1. and
DOCSIS OSSI 2.0 Specification, Section 6.3.4.1."
::= { docsDevFilterIpEntry 4 }
docsDevFilterIpDirection OBJECT-TYPE
Woundy & Marez Standards Track PAGE 48
RFC 4639 DOCSIS Cable Device MIB December 2006
SYNTAX INTEGER {
inbound(1),
outbound(2),
both(3)
}
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Determines whether the filter is applied to inbound(1)
traffic, outbound(2) traffic, or traffic in both(3)
directions."
DEFVAL { inbound }
::= { docsDevFilterIpEntry 5 }
docsDevFilterIpBroadcast OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"If set to true(1), the filter only applies to multicast
and broadcast traffic. If set to false(2), the filter
applies to all traffic."
DEFVAL { false }
::= { docsDevFilterIpEntry 6 }
docsDevFilterIpSaddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The source IP address, or portion thereof, that is to be
matched for this filter. The source address is first
masked (ANDed) against docsDevFilterIpSmask before
being compared to this value. A value of 0 for this
object and 0 for the mask matches all IP addresses."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 7 }
docsDevFilterIpSmask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"A bit mask that is to be applied to the source address
prior to matching. This mask is not necessarily the
same as a subnet mask, but 1s bits must be leftmost and
contiguous."
DEFVAL { '00000000'h }
Woundy & Marez Standards Track PAGE 49
RFC 4639 DOCSIS Cable Device MIB December 2006
::= { docsDevFilterIpEntry 8 }
docsDevFilterIpDaddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The destination IP address, or portion thereof, that is
to be matched for this filter. The destination address
is first masked (ANDed) against docsDevFilterIpDmask
before being compared to this value. A value of
00000000 for this object and 00000000 for the mask
matches all IP addresses."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 9 }
docsDevFilterIpDmask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"A bit mask that is to be applied to the destination
address prior to matching. This mask is not necessarily
the same as a subnet mask, but 1s bits MUST be leftmost
and contiguous."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 10 }
docsDevFilterIpProtocol OBJECT-TYPE
SYNTAX Integer32 (0..256)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The IP protocol value that is to be matched. For
example, icmp is 1, tcp is 6, and udp is 17. A value of
256 matches ANY protocol."
REFERENCE "www.iana.org/assignments/protocol-numbers"
DEFVAL { 256 }
::= { docsDevFilterIpEntry 11 }
docsDevFilterIpSourcePortLow OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This is the inclusive lower bound of the transport-layer
source port range that is to be matched. If the IP
protocol of the packet is neither UDP nor TCP, this
Woundy & Marez Standards Track PAGE 50
RFC 4639 DOCSIS Cable Device MIB December 2006
object is ignored during matching."
REFERENCE "www.iana.org/assignments/port-numbers"
DEFVAL { 0 }
::= { docsDevFilterIpEntry 12 }
docsDevFilterIpSourcePortHigh OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This is the inclusive upper bound of the transport-layer
source port range that is to be matched. If the IP
protocol of the packet is neither UDP nor TCP, this
object is ignored during matching."
REFERENCE "www.iana.org/assignments/port-numbers"
DEFVAL { 65535 }
::= { docsDevFilterIpEntry 13 }
docsDevFilterIpDestPortLow OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This is the inclusive lower bound of the transport-layer
destination port range that is to be matched. If the IP
protocol of the packet is neither UDP nor TCP, this
object is ignored during matching."
REFERENCE "www.iana.org/assignments/port-numbers"
DEFVAL { 0 }
::= { docsDevFilterIpEntry 14 }
docsDevFilterIpDestPortHigh OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This is the inclusive upper bound of the transport-layer
destination port range that is to be matched. If the IP
protocol of the packet is neither UDP nor TCP, this
object is ignored during matching."
REFERENCE "www.iana.org/assignments/port-numbers"
DEFVAL { 65535 }
::= { docsDevFilterIpEntry 15 }
docsDevFilterIpMatches OBJECT-TYPE
SYNTAX ZeroBasedCounter32
UNITS "matches"
MAX-ACCESS read-only
Woundy & Marez Standards Track PAGE 51
RFC 4639 DOCSIS Cable Device MIB December 2006
STATUS deprecated
DESCRIPTION
"Counts the number of times this filter was matched.
This object is initialized to 0 at boot, or at row
creation, and is reset only upon reboot."
::= { docsDevFilterIpEntry 16 }
docsDevFilterIpTos OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This is the value to be matched to the packet's
TOS (Type of Service) value (after the TOS value
is ANDed with docsDevFilterIpTosMask). A value for this
object of 0 and a mask of 0 matches all TOS values."
DEFVAL { '00'h }
::= { docsDevFilterIpEntry 17 }
docsDevFilterIpTosMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The mask to be applied to the packet's TOS value before
matching."
DEFVAL { '00'h }
::= { docsDevFilterIpEntry 18 }
docsDevFilterIpContinue OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"If this value is set to true and docsDevFilterIpControl
is anything but discard (1), continue scanning and
applying policies. See Section 3.3.3 for more
details."
DEFVAL { false }
::= { docsDevFilterIpEntry 19 }
docsDevFilterIpPolicyId OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This object points to an entry in
docsDevFilterPolicyTable. If docsDevFilterIpControl
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RFC 4639 DOCSIS Cable Device MIB December 2006
is set to policy (3), execute all matching policies
in docsDevFilterPolicyTable. If no matching policy
exists, treat as if docsDevFilterIpControl were set
to accept (1). If this object is set to the value of
0, there is no matching policy, and
docsDevFilterPolicyTable MUST NOT be consulted."
DEFVAL { 0 }
::= { docsDevFilterIpEntry 20 }
--
-- Policy Mapping Table
--
docsDevFilterPolicyTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterPolicyEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"A Table that maps between a policy group ID and a set
of pointers to policies to be applied. All rows with
the same docsDevFilterPolicyId are part of the same
group of policy pointers and are applied in the order
in this table. docsDevFilterPolicyTable exists to
allow multiple policy actions (referenced by policy
pointers) to be applied to any given classified packet.
The policy actions are applied in index order.
For example:
Index ID Type Action
1 1 TOS 1
9 5 TOS 1
12 1 IPSEC 3
This says that a packet that matches a filter with
policy id 1 first has TOS policy 1 applied (which might
set the TOS bits to enable a higher priority) and next
has the IPSEC policy 3 applied (which may result in the
packets being dumped into a secure VPN to a remote
encryptor).
Policy ID 0 is reserved for default actions and is
applied only to packets that match no filters in
docsDevFilterIpTable.
Table entries MUST NOT persist across reboots for any
device.
This table is deprecated. Instead, use the DiffServ MIB
Woundy & Marez Standards Track PAGE 53
RFC 4639 DOCSIS Cable Device MIB December 2006
from RFC 3289."
::= { docsDevFilter 5 }
docsDevFilterPolicyEntry OBJECT-TYPE
SYNTAX DocsDevFilterPolicyEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"An entry in the docsDevFilterPolicyTable. Entries are
created by Network Management. To create an entry,
docsDevFilterPolicyId MUST be specified."
INDEX { docsDevFilterPolicyIndex }
::= { docsDevFilterPolicyTable 1 }
DocsDevFilterPolicyEntry ::= SEQUENCE {
docsDevFilterPolicyIndex Integer32,
docsDevFilterPolicyId Integer32,
-- docsDevFilterPolicyType INTEGER,
-- docsDevFilterPolicyAction Integer32,
docsDevFilterPolicyStatus RowStatus,
docsDevFilterPolicyPtr RowPointer
}
docsDevFilterPolicyIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION "Index value for the table."
::= { docsDevFilterPolicyEntry 1 }
docsDevFilterPolicyId OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Policy ID for this entry. If a policy ID can apply to
multiple rows of this table, all relevant policies are
executed. Policy 0 (if populated) is applied to all
packets that do not match any of the filters. N.B. If
docsDevFilterIpPolicyId is set to 0, it DOES NOT match
policy 0 of this table."
::= { docsDevFilterPolicyEntry 2 }
-- The following two objects were removed and never used; however,
-- to preserve OID numbering, they are simply commented out to
-- to ensure that they are not used again.
-- docsDevFilterPolicyType ::= { docsDevFilterPolicyEntry 3 }
-- docsDevFilterPolicyAction ::= { docsDevFilterPolicyEntry 4 }
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docsDevFilterPolicyStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Object used to create an entry in this table. There is
no restriction in changing any object in a row while
this object is set to active.
The following object MUST have a valid value before this
object can be set to active: docsDevFilterPolicyPtr."
::= { docsDevFilterPolicyEntry 5 }
docsDevFilterPolicyPtr OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This object points to a row in an applicable filter
policy table. Currently, the only standard policy
table is docsDevFilterTosTable.
Per the textual convention, this object points to the
first accessible object in the row; e.g., to point to a
row in docsDevFilterTosTable with an index of 21, the
value of this object would be the object identifier
docsDevTosStatus.21.
Vendors are recommended to adhere to the same convention
when adding vendor-specific policy table extensions.
If this pointer references an empty or non-existent
row, then no policy action is taken.
The default upon row creation is a null pointer that
results in no policy action being taken."
DEFVAL { zeroDotZero }
::= { docsDevFilterPolicyEntry 6 }
--
-- TOS Policy action table
--
docsDevFilterTosTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterTosEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"Table used to describe Type of Service (TOS) bits
Woundy & Marez Standards Track PAGE 55
RFC 4639 DOCSIS Cable Device MIB December 2006
processing.
This table is an adjunct to the docsDevFilterIpTable
and the docsDevFilterPolicy table. Entries in the
latter table can point to specific rows in this (and
other) tables and cause specific actions to be taken.
This table permits the manipulation of the value of the
Type of Service bits in the IP header of the matched
packet as follows:
Set the tosBits of the packet to
(tosBits & docsDevFilterTosAndMask) |
docsDevFilterTosOrMask
This construct allows you to do a clear and set of all
the TOS bits in a flexible manner.
Table entries MUST NOT persist across reboots for any
device.
This table is deprecated. Instead, use the DiffServ MIB
from RFC 3289."
::= { docsDevFilter 6 }
docsDevFilterTosEntry OBJECT-TYPE
SYNTAX DocsDevFilterTosEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"A TOS policy entry."
INDEX { docsDevFilterTosIndex }
::= { docsDevFilterTosTable 1 }
DocsDevFilterTosEntry ::= SEQUENCE {
docsDevFilterTosIndex Integer32,
docsDevFilterTosStatus RowStatus,
docsDevFilterTosAndMask OCTET STRING,
docsDevFilterTosOrMask OCTET STRING
}
docsDevFilterTosIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"The unique index for this row. There are no ordering
requirements for this table, and any valid index may be
specified."
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::= { docsDevFilterTosEntry 1 }
docsDevFilterTosStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The object used to create and delete entries in this
table. A row created by specifying just this object
results in a row that specifies no change to the TOS
bits. A row may be created using either the
create-and-go or create-and-wait paradigms. There is
no restriction on the ability to change values in this
row while the row is active."
::= { docsDevFilterTosEntry 2 }
docsDevFilterTosAndMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This value is bitwise ANDed with the matched packet's
TOS bits."
DEFVAL { 'ff'h }
::= { docsDevFilterTosEntry 3 }
docsDevFilterTosOrMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"This value is bitwise ORed with the result from the
AND procedure (tosBits & docsDevFilterTosAndMask).
The result then replaces the packet's TOS bits."
DEFVAL { '00'h }
::= { docsDevFilterTosEntry 4 }
--
-- CPE IP Management and anti-spoofing group. Only implemented on
-- Cable Modems.
--
docsDevCpe OBJECT IDENTIFIER ::= { docsDevMIBObjects 7 }
docsDevCpeEnroll OBJECT-TYPE
SYNTAX INTEGER {
none(1),
any(2)
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RFC 4639 DOCSIS Cable Device MIB December 2006
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the population of
docsDevFilterCpeTable.
If set to none, the filters must be set manually
by a network management action (either configuration
or SNMP set).
If set to any, the CM wiretaps the packets originating
from the ethernet and enrolls up to docsDevCpeIpMax
addresses as based on the source IPv4 or v6 addresses of
those packets."
DEFVAL { any }
::= { docsDevCpe 1 }
docsDevCpeIpMax OBJECT-TYPE
SYNTAX Integer32 (-1..2147483647)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the maximum number of CPEs allowed
to be learned behind this device. If set to zero, any
number of CPEs may connect up to the maximum permitted
for the device.
If set to -1, no filtering is done on CPE source
addresses, and no entries are made in the
docsDevFilterCpeTable via learning. If an attempt is
made to set this to a number greater than that
permitted for the device, it is set to that maximum."
DEFVAL { -1 }
::= { docsDevCpe 2 }
docsDevCpeTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevCpeEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"This table lists the IPv4 addresses seen (or permitted)
as source addresses in packets originating from the
customer interface on this device. In addition, this
table can be provisioned with the specific addresses
permitted for the CPEs via the normal row creation
mechanisms. Table entries MUST NOT persist across
reboots for any device.
N.B. Management action can add entries in this table
and in docsDevCpeIpTable past the value of
Woundy & Marez Standards Track PAGE 58
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevCpeIpMax. docsDevCpeIpMax ONLY restricts the
ability of the CM to add learned addresses
automatically.
This table is deprecated and is replaced by
docsDevCpeInetTable."
::= { docsDevCpe 3 }
docsDevCpeEntry OBJECT-TYPE
SYNTAX DocsDevCpeEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"An entry in the docsDevFilterCpeTable. There is one
entry for each IPv4 CPE seen or provisioned. If
docsDevCpeIpMax is set to -1, this table is ignored;
otherwise, upon receipt of an IP packet from the
customer interface of the CM, the source IP address is
checked against this table. If the address is in the
table, packet processing continues. If the address is
not in the table but docsDevCpeEnroll is set to any
and the sum of the table sizes of docsDevCpeTable and
docsDevCpeInetTable is less than docsDevCpeIpMax, the
address is added to the table, and packet processing
continues. Otherwise, the packet is dropped.
The filtering actions specified by this table occur
after any LLC filtering (docsDevFilterLLCTable), but
prior to any IP filtering (docsDevFilterIpTable,
docsDevNmAccessTable)."
INDEX { docsDevCpeIp }
::= {docsDevCpeTable 1 }
DocsDevCpeEntry ::= SEQUENCE {
docsDevCpeIp IpAddress,
docsDevCpeSource INTEGER,
docsDevCpeStatus RowStatus
}
docsDevCpeIp OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"The IPv4 address to which this entry applies.
N.B. Attempts to set all zeros or all ones address
values MUST be rejected."
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::= { docsDevCpeEntry 1 }
docsDevCpeSource OBJECT-TYPE
SYNTAX INTEGER {
other(1),
manual(2),
learned(3)
}
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"This object describes how this entry was created. If
the value is manual(2), this row was created by a
network management action (either configuration or
SNMP set). If set to learned(3), then it was found via
looking at the source IPv4 address of a received packet.
The value other(1) is used for any entries that do not
meet manual(2) or learned(3) criteria."
::= { docsDevCpeEntry 2 }
docsDevCpeStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"Standard object to manipulate rows. To create a row in
this table, one only needs to specify this object.
Management stations SHOULD use the create-and-go
mechanism for creating rows in this table."
::= { docsDevCpeEntry 3 }
--
-- Internet CPE Management and anti spoofing group, for support of
-- non-IPv4 CPEs.
--
docsDevCpeInetTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevCpeInetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists the IP addresses seen (or permitted) as
source addresses in packets originating from the
customer interface on this device. In addition, this
table can be provisioned with the specific addresses
permitted for the CPEs via the normal row creation
mechanisms.
Woundy & Marez Standards Track PAGE 60
RFC 4639 DOCSIS Cable Device MIB December 2006
N.B. Management action can add entries in this table
and in docsDevCpeIpTable past the value of
docsDevCpeIpMax. docsDevCpeIpMax ONLY restricts the
ability of the CM to add learned addresses
automatically.
Table entries MUST NOT persist across reboots for any
device.
This table exactly mirrors docsDevCpeTable and applies
to IPv4 and IPv6 addresses."
::= { docsDevCpe 4 }
docsDevCpeInetEntry OBJECT-TYPE
SYNTAX DocsDevCpeInetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the docsDevFilterCpeInetTable. There is one
entry for each IP CPE seen or provisioned. If
docsDevCpeIpMax is set to -1, this table is ignored;
otherwise, upon receipt of an IP packet from the
customer interface of the CM, the source IP address is
checked against this table. If the address is in the
table, packet processing continues. If the address is
not in the table but docsDevCpeEnroll is set to any and
the sum of the table sizes for docsDevCpeTable and
docsDevCpeInetTable is less than docsDevCpeIpMax, the
address is added to the table, and packet processing
continues. Otherwise, the packet is dropped.
The filtering actions specified by this table occur
after any LLC filtering (docsDevFilterLLCTable), but
prior to any IP filtering (docsDevFilterIpTable,
docsDevNmAccessTable).
When an agent (cable modem) restarts, then all
dynamically created rows are lost."
INDEX { docsDevCpeInetType, docsDevCpeInetAddr }
::= { docsDevCpeInetTable 1 }
DocsDevCpeInetEntry ::= SEQUENCE {
docsDevCpeInetType InetAddressType,
docsDevCpeInetAddr InetAddress,
docsDevCpeInetSource INTEGER,
docsDevCpeInetRowStatus RowStatus
}
Woundy & Marez Standards Track PAGE 61
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docsDevCpeInetType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The type of internet address of docsDevCpeInetAddr."
::= { docsDevCpeInetEntry 1 }
docsDevCpeInetAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Internet address to which this entry applies.
Implementors need to be aware that if the size of
docsDevCpeInetAddr exceeds 114 octets OIDs of
instances of columns in this row will have more
than 128 sub-identifiers and cannot be accessed
using SNMPv1, SNMPv2c, or SNMPv3. Only unicast
address are allowed for this object."
::= { docsDevCpeInetEntry 2 }
docsDevCpeInetSource OBJECT-TYPE
SYNTAX INTEGER {
manual(2),
learned(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object describes how this entry was created. If
the value is manual(2), this row was created by a
network management action (either configuration or
SNMP set). If set to learned(3), then it was found
via looking at the source IP address of a received
packet."
::= { docsDevCpeInetEntry 3 }
docsDevCpeInetRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Standard object to manipulate rows. To create a row in
this table, one only needs to specify this object.
Management stations SHOULD use the create-and-go
mechanism for creating rows in this table."
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RFC 4639 DOCSIS Cable Device MIB December 2006
::= { docsDevCpeInetEntry 4 }
--
-- Placeholder for notifications/traps.
--
-- erroneous, DO NOT USE docsDevNotification
docsDevNotification OBJECT IDENTIFIER ::= { docsDev 2 }
-- erroneous, DO NOT USE docsDevNotification
docsDevNotifications OBJECT IDENTIFIER ::= { docsDev 0 }
--
-- RFC 2669 Conformance definitions
--
docsDevConformance OBJECT IDENTIFIER ::= { docsDev 3 }
docsDevGroups OBJECT IDENTIFIER ::= { docsDevConformance 1 }
docsDevCompliances OBJECT IDENTIFIER ::= { docsDevConformance 2 }
docsDevBasicCompliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"The RFC 2669 compliance statement for MCNS/DOCSIS
Cable Modems and Cable Modem Termination Systems."
MODULE -- docsDev
-- conditionally mandatory groups
GROUP docsDevBaseGroup
DESCRIPTION
"Mandatory in Cable Modems, optional in Cable Modem
Termination Systems."
GROUP docsDevEventGroup
DESCRIPTION
"Mandatory in Cable Modems, optional in Cable Modem
Termination Systems."
GROUP docsDevFilterGroup
DESCRIPTION
"Mandatory in Cable Modems, optional in Cable Modem
Termination Systems."
GROUP docsDevNmAccessGroup
Woundy & Marez Standards Track PAGE 63
RFC 4639 DOCSIS Cable Device MIB December 2006
DESCRIPTION
"This group is only implemented in devices that do not
implement the SNMPv3 User Security Model. It SHOULD NOT
be implemented by devices that conform to SNMPv3.
For devices that do not implement SNMPv3 or later, this
group is Mandatory in Cable Modems and is optional
in Cable Modem Termination Systems."
GROUP docsDevServerGroup
DESCRIPTION
"This group is implemented only in Cable Modems, and is
not implemented in Cable Modem Termination Systems."
GROUP docsDevSoftwareGroup
DESCRIPTION
"This group is Mandatory in Cable Modems and optional in
Cable Modem Termination Systems."
GROUP docsDevCpeGroup
DESCRIPTION
"This group is Mandatory in Cable Modems, and is
not implemented in Cable Modem Termination Systems."
OBJECT docsDevSTPControl
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support noStFilterBpdu(2)."
OBJECT docsDevNmAccessIp
DESCRIPTION
"It is compliant to recognize the IP address
255.255.255.255 as referring to any NMS."
OBJECT docsDevEvReporting
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support local(0). An agent need not
enforce that trap or syslog logging be accompanied
by local(0) or localVolatile(3) logging."
::= { docsDevCompliances 1 }
docsDevBaseGroup OBJECT-GROUP
OBJECTS {
docsDevRole,
docsDevDateTime,
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RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevResetNow,
docsDevSerialNumber,
docsDevSTPControl
}
STATUS current
DESCRIPTION
"A collection of objects providing device status and
control."
::= { docsDevGroups 1 }
docsDevNmAccessGroup OBJECT-GROUP
OBJECTS {
docsDevNmAccessIp,
docsDevNmAccessIpMask,
docsDevNmAccessCommunity,
docsDevNmAccessControl,
docsDevNmAccessInterfaces,
docsDevNmAccessStatus
}
STATUS deprecated
DESCRIPTION
"A collection of objects for controlling access to SNMP
objects on cable devices.
This group has been deprecated because all the
objects have been deprecated in favor of SNMPv3 and
Coexistence MIBs."
::= { docsDevGroups 2 }
docsDevSoftwareGroup OBJECT-GROUP
OBJECTS {
docsDevSwServer,
docsDevSwFilename,
docsDevSwAdminStatus,
docsDevSwOperStatus,
docsDevSwCurrentVers
}
STATUS deprecated
DESCRIPTION
"A collection of objects for controlling software
downloads.
This group has been deprecated and replaced by
docsDevSoftwareGroupV2. Object docsDevSwServer
has been replaced by docsDevSwServerAddressType
and docsDevSwServerAddress, and
docsDevSwServerTransportProtocol has been added to
support TFTP and HTTP firmware downloads."
Woundy & Marez Standards Track PAGE 65
RFC 4639 DOCSIS Cable Device MIB December 2006
::= { docsDevGroups 3 }
docsDevServerGroup OBJECT-GROUP
OBJECTS {
docsDevServerBootState,
docsDevServerDhcp,
docsDevServerTime,
docsDevServerTftp,
docsDevServerConfigFile
}
STATUS deprecated
DESCRIPTION
"A collection of objects providing status about server
provisioning.
This group has been deprecated and replaced by
docsDevServerGroupV2. The objects docsDevServerDhcp,
docsDevServerTime, and docsDevServerTftp have
been replaced by docsDevServerDhcpAddressType,
docsDevServerDhcpAddress, docsDevServerTimeAddressType,
docsDevServerTimeAddress,
docsDevServerConfigTftpAddressType, and
docsDevServerConfigTftpAddress."
::= { docsDevGroups 4 }
docsDevEventGroup OBJECT-GROUP
OBJECTS {
docsDevEvControl,
docsDevEvSyslog,
docsDevEvThrottleAdminStatus,
docsDevEvThrottleInhibited,
docsDevEvThrottleThreshold,
docsDevEvThrottleInterval,
docsDevEvReporting,
docsDevEvFirstTime,
docsDevEvLastTime,
docsDevEvCounts,
docsDevEvLevel,
docsDevEvId,
docsDevEvText
}
STATUS deprecated
DESCRIPTION
"A collection of objects used to control and monitor
events.
This group has been deprecated and replaced by
docsDevEventGroupV2. The object docsDevEvSyslog has
Woundy & Marez Standards Track PAGE 66
RFC 4639 DOCSIS Cable Device MIB December 2006
been replaced by docsDevEvSyslogAddressType and
docsDevEvSyslogAddress, and docsDevEvThrottleInhibited
has been replaced by
docsDevEvThrottleThresholdExceeded."
::= { docsDevGroups 5 }
docsDevFilterGroup OBJECT-GROUP
OBJECTS {
docsDevFilterLLCUnmatchedAction,
docsDevFilterIpDefault,
docsDevFilterLLCStatus,
docsDevFilterLLCIfIndex,
docsDevFilterLLCProtocolType,
docsDevFilterLLCProtocol,
docsDevFilterLLCMatches,
docsDevFilterIpControl,
docsDevFilterIpIfIndex,
docsDevFilterIpStatus,
docsDevFilterIpDirection,
docsDevFilterIpBroadcast,
docsDevFilterIpSaddr,
docsDevFilterIpSmask,
docsDevFilterIpDaddr,
docsDevFilterIpDmask,
docsDevFilterIpProtocol,
docsDevFilterIpSourcePortLow,
docsDevFilterIpSourcePortHigh,
docsDevFilterIpDestPortLow,
docsDevFilterIpDestPortHigh,
docsDevFilterIpMatches,
docsDevFilterIpTos,
docsDevFilterIpTosMask,
docsDevFilterIpContinue,
docsDevFilterIpPolicyId,
docsDevFilterPolicyId,
docsDevFilterPolicyStatus,
docsDevFilterPolicyPtr,
docsDevFilterTosStatus,
docsDevFilterTosAndMask,
docsDevFilterTosOrMask
}
STATUS deprecated
DESCRIPTION
"A collection of objects to specify filters at the link
layer and IPv4 layer.
This group has been deprecated and replaced by various
groups from the DiffServ MIB."
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RFC 4639 DOCSIS Cable Device MIB December 2006
::= { docsDevGroups 6 }
docsDevCpeGroup OBJECT-GROUP
OBJECTS {
docsDevCpeEnroll,
docsDevCpeIpMax,
docsDevCpeSource,
docsDevCpeStatus
}
STATUS deprecated
DESCRIPTION
"A collection of objects used to control the number
and specific values of IPv4 addresses allowed for
associated Customer Premises Equipment (CPE).
This group has been deprecated and replaced by
docsDevInetCpeGroup. The object docsDevCpeSource has
been replaced by docsDevCpeInetSource, and
docsDevCpeStatus has been replaced by
docsDevCpeInetRowStatus."
::= { docsDevGroups 7 }
--
-- RFC 4639 Conformance definitions
--
docsDevGroupsV2 OBJECT IDENTIFIER ::= { docsDevConformance 3 }
docsDevCompliancesV2 OBJECT IDENTIFIER ::= { docsDevConformance 4 }
docsDevCmCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for DOCSIS Cable Modems.
This compliance statement applies to implementations
of DOCSIS versions that are not IPv6 capable."
MODULE DIFFSERV-MIB -- RFC 3289
MANDATORY-GROUPS {
diffServMIBDataPathGroup,
diffServMIBClfrGroup,
diffServMIBClfrElementGroup,
diffServMIBMultiFieldClfrGroup,
diffServMIBActionGroup,
diffServMIBDscpMarkActGroup,
diffServMIBCounterGroup,
diffServMIBAlgDropGroup
Woundy & Marez Standards Track PAGE 68
RFC 4639 DOCSIS Cable Device MIB December 2006
}
OBJECT diffServDataPathStatus -- same as RFC 3289
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
"Support for createAndWait and notInService is not
required."
OBJECT diffServClfrStatus -- same as RFC 3289
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
"Support for createAndWait and notInService is not
required."
OBJECT diffServClfrElementStatus -- same as RFC 3289
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
"Support for createAndWait and notInService is not
required."
OBJECT diffServMultiFieldClfrAddrType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT diffServMultiFieldClfrSrcAddr
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT diffServMultiFieldClfrDstAddr
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT diffServAlgDropStatus -- same as RFC 3289
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
"Support for createAndWait and notInService is not
required."
Woundy & Marez Standards Track PAGE 69
RFC 4639 DOCSIS Cable Device MIB December 2006
OBJECT diffServDataPathStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServClfrStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServClfrElementStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServMultiFieldClfrStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServActionStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServCountActStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServAlgDropStorage
SYNTAX StorageType { volatile(2) }
DESCRIPTION
"An implementation is only required to support
volatile storage."
OBJECT diffServAlgDropType
SYNTAX INTEGER { alwaysDrop(5) }
DESCRIPTION
"This object is only used to provide packet
filtering. Implementations need not support other
values of this enumeration."
Woundy & Marez Standards Track PAGE 70
RFC 4639 DOCSIS Cable Device MIB December 2006
MODULE -- docsDev
MANDATORY-GROUPS {
docsDevBaseGroup,
docsDevBaseIgmpGroup,
docsDevBaseMaxCpeGroup,
docsDevSoftwareGroupV2,
docsDevServerGroupV2,
docsDevEventGroupV2,
docsDevFilterLLCGroup
}
-- conditionally mandatory groups
GROUP docsDevInetCpeGroup
DESCRIPTION
"This group is optional in Cable Modems."
OBJECT docsDevDateTime
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only."
OBJECT docsDevSTPControl
SYNTAX INTEGER { noStFilterBpdu(2) }
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support noStFilterBpdu(2)."
OBJECT docsDevIgmpModeControl
SYNTAX INTEGER { passive(1) }
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support passive(1)."
OBJECT docsDevSwServerAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevSwServerAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
Woundy & Marez Standards Track PAGE 71
RFC 4639 DOCSIS Cable Device MIB December 2006
OBJECT docsDevServerDhcpAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevServerDhcpAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevServerTimeAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevServerTimeAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevServerConfigTftpAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevServerConfigTftpAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevEvReporting
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support local(0)."
OBJECT docsDevEvSyslogAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
Woundy & Marez Standards Track PAGE 72
RFC 4639 DOCSIS Cable Device MIB December 2006
OBJECT docsDevEvSyslogAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevSwServerTransportProtocol
SYNTAX INTEGER { tftp(1) }
DESCRIPTION
"An implementation is only required to support TFTP
software image downloads."
::= { docsDevCompliancesV2 1 }
docsDevCmtsCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for DOCSIS Cable Modem
Termination Systems.
This compliance statement applies to implementations
of DOCSIS versions that are not IPv6 capable."
MODULE -- docsDev
-- conditionally mandatory groups
GROUP docsDevBaseGroup
DESCRIPTION
"Optional in Cable Modem Termination Systems."
GROUP docsDevBaseIgmpGroup
DESCRIPTION
"Optional in Cable Modem Termination Systems."
GROUP docsDevBaseMaxCpeGroup
DESCRIPTION
"This group MUST NOT be implemented in Cable Modem
Termination Systems."
GROUP docsDevSoftwareGroupV2
DESCRIPTION
"Optional in Cable Modem Termination Systems."
GROUP docsDevServerGroupV2
DESCRIPTION
"This group MUST NOT be implemented in Cable Modem
Termination Systems."
Woundy & Marez Standards Track PAGE 73
RFC 4639 DOCSIS Cable Device MIB December 2006
GROUP docsDevEventGroupV2
DESCRIPTION
"Optional in Cable Modem Termination Systems."
GROUP docsDevFilterLLCGroup
DESCRIPTION
"This group MUST NOT be implemented in Cable Modem
Termination Systems. See the Subscriber Management
MIB for similar CMTS capability."
GROUP docsDevInetCpeGroup
DESCRIPTION
"This group MUST NOT be implemented in Cable Modem
Termination Systems. See the Subscriber Management
MIB for similar CMTS capability."
OBJECT docsDevDateTime
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only."
OBJECT docsDevSTPControl
SYNTAX INTEGER { noStFilterBpdu(2) }
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support noStFilterBpdu(2)."
OBJECT docsDevIgmpModeControl
SYNTAX INTEGER { passive(1) }
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support passive(1)."
OBJECT docsDevSwServerAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevSwServerAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevEvReporting
Woundy & Marez Standards Track PAGE 74
RFC 4639 DOCSIS Cable Device MIB December 2006
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support local(0)."
OBJECT docsDevEvSyslogAddressType
SYNTAX InetAddressType { ipv4(1) }
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevEvSyslogAddress
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT docsDevSwServerTransportProtocol
SYNTAX INTEGER { tftp(1) }
DESCRIPTION
"An implementation is only required to support TFTP
software image downloads."
::= { docsDevCompliancesV2 2 }
docsDevBaseIgmpGroup OBJECT-GROUP
OBJECTS {
docsDevIgmpModeControl
}
STATUS current
DESCRIPTION
"An object providing cable device IGMP status and
control."
::= { docsDevGroupsV2 1 }
docsDevBaseMaxCpeGroup OBJECT-GROUP
OBJECTS {
docsDevMaxCpe
}
STATUS current
DESCRIPTION
"An object providing management of the maximum number of
CPEs permitted access through a cable modem."
::= { docsDevGroupsV2 2 }
docsDevNmAccessExtGroup OBJECT-GROUP
OBJECTS {
docsDevNmAccessTrapVersion
Woundy & Marez Standards Track PAGE 75
RFC 4639 DOCSIS Cable Device MIB December 2006
}
STATUS deprecated
DESCRIPTION
"An object, in addition to the objects in
docsDevNmAccessGroup, for controlling access to
SNMP objects on cable devices.
This group is included in this MIB due to existing
implementations of docsDevNmAccessTrapVersion in
DOCSIS cable modems.
This group has been deprecated because the object has
been deprecated in favor of SNMPv3 and Coexistence
MIBs."
::= { docsDevGroupsV2 3 }
docsDevSoftwareGroupV2 OBJECT-GROUP
OBJECTS {
docsDevSwFilename,
docsDevSwAdminStatus,
docsDevSwOperStatus,
docsDevSwCurrentVers,
docsDevSwServerAddressType,
docsDevSwServerAddress,
docsDevSwServerTransportProtocol
}
STATUS current
DESCRIPTION
"A collection of objects for controlling software
downloads. This group replaces docsDevSoftwareGroup."
::= { docsDevGroupsV2 4 }
docsDevServerGroupV2 OBJECT-GROUP
OBJECTS {
docsDevServerBootState,
docsDevServerDhcpAddressType,
docsDevServerDhcpAddress,
docsDevServerTimeAddressType,
docsDevServerTimeAddress,
docsDevServerConfigTftpAddressType,
docsDevServerConfigTftpAddress,
docsDevServerConfigFile
}
STATUS current
DESCRIPTION
"A collection of objects providing status about server
provisioning. This group replaces docsDevServerGroup."
::= { docsDevGroupsV2 5 }
Woundy & Marez Standards Track PAGE 76
RFC 4639 DOCSIS Cable Device MIB December 2006
docsDevEventGroupV2 OBJECT-GROUP
OBJECTS {
docsDevEvControl,
docsDevEvThrottleAdminStatus,
docsDevEvThrottleThreshold,
docsDevEvThrottleInterval,
docsDevEvReporting,
docsDevEvFirstTime,
docsDevEvLastTime,
docsDevEvCounts,
docsDevEvLevel,
docsDevEvId,
docsDevEvText,
docsDevEvSyslogAddressType,
docsDevEvSyslogAddress,
docsDevEvThrottleThresholdExceeded
}
STATUS current
DESCRIPTION
"A collection of objects used to control and monitor
events. This group replaces docsDevEventGroup.
The event reporting mechanism, and more specifically
docsDevEvReporting, can be used to take advantage of
the event reporting features of RFC 3413 and RFC 3014."
::= { docsDevGroupsV2 6 }
docsDevFilterLLCGroup OBJECT-GROUP
OBJECTS {
docsDevFilterLLCUnmatchedAction,
docsDevFilterLLCStatus,
docsDevFilterLLCIfIndex,
docsDevFilterLLCProtocolType,
docsDevFilterLLCProtocol,
docsDevFilterLLCMatches
}
STATUS current
DESCRIPTION
"A collection of objects to specify link layer filters."
::= { docsDevGroupsV2 7 }
docsDevInetCpeGroup OBJECT-GROUP
OBJECTS {
docsDevCpeEnroll,
docsDevCpeIpMax,
docsDevCpeInetSource,
docsDevCpeInetRowStatus
}
STATUS current
Woundy & Marez Standards Track PAGE 77
RFC 4639 DOCSIS Cable Device MIB December 2006
DESCRIPTION
"A collection of objects used to control the number
and specific values of Internet (e.g., IPv4 and IPv6)
addresses allowed for associated Customer Premises
Equipment (CPE)."
::= { docsDevGroupsV2 8 }
END
5. Acknowledgements
This document is a production of the IPCDN Working Group and is a
revision of RFC 2669, "Cable Device Management Information Base for
DOCSIS-Compliant Cable Modems and Cable Modem Termination Systems"
[RFC 2669]. Mike St. Johns and Guenter Roeck served well as the
editors of previous versions of this MIB module.
The editor specifically wishes to thank Howard Abramson, Eduardo
Cardona, Andre Lejeune, Kevin Marez, Jean-Francois Mule, Greg
Nakanishi, Pak Siripunkaw, Boris Tsekinovski, Randy Presuhn, Bert
Wijnen, and Bill Yost for their contributions to this document.
5.1. Revision Descriptions
This document contains the following revisions over RFC 2669:
o All IPv4 address objects were either deprecated and replaced or
mirrored with IPv6 objects, where appropriate, following the
guidelines of RFC 4001 [RFC 4001]. In particular,
docsDevCpeInetTable was added, and the docsDevFilterGroup objects
were deprecated in favor of the DiffServ MIB.
o Objects that were obviated by SNMPv3 and the SNMP Coexistence MIBs
have been deprecated; e.g., docsDevNmAccessTable.
o A new object, docsDevIgmpModeControl, has been added to control
passive versus active IGMP modem operation.
o A new object, docsDevMaxCpe, has been added to report the maximum
number of CPEs granted network access across the CM.
o A new object, docsDevSwServerTransportProtocol, has been added to
docsDevSoftware, and other object DESCRIPTIONs have been modified,
to enable the use of either TFTP or HTTP for software downloads to
the device.
Woundy & Marez Standards Track PAGE 78
RFC 4639 DOCSIS Cable Device MIB December 2006
o A new object, docsDevEvThrottleThresholdExceeded, has been added
to replace docsDevEvThrottleInhibited for simplification of event
threshold management.
o The docsDevEvReporting object has been modified to enable local
logging to the internal volatile log, and not to the internal
non-volatile log.
o Minor updates to the description text have been made to a number
of objects to clarify their meaning.
o The compliance statements were updated to reflect current
requirements (including making the docsDevCpe objects optional)
and split between CM and CMTS devices.
o Text was added to indicate support of the SNMP Notification MIB
[RFC 3413] and Notification Log MIB [RFC 3014] modules.
6. Security Considerations
This MIB module relates to a system that will provide metropolitan
public internet access. As such, improper manipulation of the
objects represented by this MIB module may result in denial of
service to a large number of end-users. In addition, manipulation of
docsDevNmAccessTable, docsDevFilterLLCTable, docsDevFilterIpTable,
docsDevFilterInetTable, and the elements of the docsDevCpe and
docsDevCpeInetTable groups may allow an end-user to increase his or
her service levels, spoof his or her IP addresses, change the
permitted management stations, or affect other end-users in either a
positive or negative manner.
It is recommended that the implementors prevent the "tiny fragment"
and "overlapping fragment" attacks for the IP filtering tables in
this MIB module, as discussed in [RFC 1858] and [RFC 3128]. Prevention
of these attacks can be implemented with the following rules, when
TCP source and/or destination port filtering is enabled:
o Admit all packets with fragment offset >= 2.
o Discard all packets with fragment offset = 1, or with fragment
offset = 0 AND fragment payload length < 16.
o Apply filtering rules to all packets with fragment offset = 0.
This MIB module does not affect confidentiality of services on a
cable modem system. [BPI] and [BPIPLUS] specify the implementation
of the DOCSIS Baseline Privacy and Baseline Privacy Plus mechanisms
for data transmission confidentiality.
Woundy & Marez Standards Track PAGE 79
RFC 4639 DOCSIS Cable Device MIB December 2006
There are a number of management objects defined in this MIB module
with a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
network operations. These are the tables and objects and their
sensitivity/vulnerability:
o The use of docsDevNmAccessTable to specify management stations is
considered only limited protection and does not protect against
attacks that spoof the management station's IP address. The use
of stronger mechanisms, such as SNMPv3 security, should be
considered, where possible. Specifically, SNMPv3 USM [RFC 3414]
and VACM [RFC 3415] MUST be used with any v3 agent that implements
this MIB module.
o The CM may have its software changed by the actions of the
management system using a combination of the following objects:
docsDevSwServer, docsDevSwFilename, docsDevSwAdminStatus,
docsDevSwServerAddressType, docsDevSwServerAddress, and
docsDevSwServerTransportProtocol. An improper software download
may result in substantial vulnerabilities and the loss of the
ability of the management system to control the cable modem. A
cable device SHOULD implement the code verification mechanisms of
[BPIPLUS] to verify the source and integrity of downloaded
software images.
o The device may be reset by setting docsDevResetNow = true(1).
This causes the device to reload its configuration files, as well
as to eliminate all previous non-persistent network management
settings. As such, this may provide a vector for attacking the
system.
o Setting docsDevEvThrottleAdminStatus = unconstrained(1) (which is
also the DEFVAL) may cause flooding of traps, which can disrupt
network service. Additionally, docsDevThrottleThreshold and
docsDevThrottleInterval could also be set to high values that may
cause a disruption in service.
o Setting docsDevDateTime to an arbitrary (incorrect) value would
merely cause the device to record incorrect timestamps on many
events/actions that rely on this object for reporting.
o Setting docsDevEvControl to resetLog(1) will delete any event log
history and could potentially impact debugging/troubleshooting
efforts.
o Setting docsDevEvSyslog.
Woundy & Marez Standards Track PAGE 80
RFC 4639 DOCSIS Cable Device MIB December 2006
o Setting docsDevEvReporting to enable syslog reporting, along with
a redirect of the syslog server could allow access to sensitive
information on network devices. Modifying docsDevEvSyslog,
docsDevEvSyslogAddressType, or docsDevEvSyslogAddress could allow
a redirect of sensitive information.
o Setting docsDevFilterLLCnmatchedAction or docsDevFilterIpDefault
could cause significant changes to default traffic filtering on a
device.
o Setting docsDevCpeEnroll to any(2) could cause the
docsDevFilterCPETable to be populated, which may not be the
intended functionality.
o Setting docsDevCpeIpMax to a value other than that intended by the
MSO may allow a user to provision more devices than the MSO would
like.
o Setting values in the docsDevNmAccess table can potentially
introduce a mechanism for users to use a local NMS device and
manipulate other settings in the CM or CMTS.
o Setting values in the docsDevFilterLLC and docsDevFilterIP tables
can allow or deny access to certain devices that the MSO does not
want.
o Setting docsDevCpeStatus and docsDevCpeInetRowStatus may allow
users to provision more devices than were intended by the MSO, or
to provision different ones.
Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive or
vulnerable in some network environments. It is thus important to
control even GET access to these objects and possibly to even encrypt
the values of these objects when sending them over the network via
SNMP. These are the tables and objects and their
sensitivity/vulnerability:
o Rows from docsDevNmAccessTable may provide sufficient information
for attackers to spoof management stations that have management
access to the device.
o The docsDevSwCurrentVers object may provide hints as to the
software vulnerabilities of the cable device.
o The docsDevFilterLLCTable and docsDevFilterLLCTable may provide
clues for attacking the cable device and other subscriber devices.
Woundy & Marez Standards Track PAGE 81
RFC 4639 DOCSIS Cable Device MIB December 2006
SNMP versions prior to SNMPv3 did not include adequate security.
Even if the network itself is secure (for example by using IPsec),
even then, there is no control as to who on the secure network is
allowed to access and GET/SET (read/change/create/delete) the
objects in this MIB module.
It is RECOMMENDED that implementers consider the security features
as provided by the SNMPv3 framework (see [RFC 3410], section 8),
including full support for the SNMPv3 cryptographic mechanisms
(for authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module, is properly configured to give access
to the objects only to those principals (users) that have
legitimate rights to indeed GET or SET (change/create/delete)
them.
7. IANA Considerations
The MIB module defined in this document uses the following IANA-
assigned OBJECT IDENTIFIER values, recorded in the SMI Numbers
registry:
Descriptor OBJECT IDENTIFIER value
---------- -----------------------
docsDevMIB { mib-2 69 }
Woundy & Marez Standards Track PAGE 82
RFC 4639 DOCSIS Cable Device MIB December 2006
8. References
8.1. Normative References
[BPI] SCTE Data Standards Subcommittee, "Data-Over-Cable
Service Interface Specifications: DOCSIS 1.0 Baseline
Privacy Interface Specification SCTE 22-2 2002", 2002,
<http://www.scte.org/standards/>.
[BPIPLUS] CableLabs, "Data-Over-Cable Service Interface
Specifications: Baseline Privacy Plus Interface
Specification CM-SP-BPI+_I12-050812", August 2005,
<http://www.cablemodem.com/specifications/>,
<http://www.cablelabs.com/specifications/archives/>.
[ITU-T_J.112] ITU-T Recommendation J.112 (3/98), "Transmission
Systems for Interactive Cable Television Services,
J.112, International Telecommunications Union", March
1998, <http://www.itu.int/ITU-T/studygroups/com09/>.
[MTA-PROV] CableLabs, "PacketCable(TM) 1.5 Specification: MTA
Device Provisioning PKT-SP-PROV1.5-I02-050812", August
2005, <http://www.packetcable.com/specifications/>,
<http://www.cablelabs.com/specifications/archives/>.
[OSSI1.0] SCTE Data Standards Subcommittee, "Data-Over-Cable
Service Interface Specification: DOCSIS 1.0 Operations
Support System Interface (OSSI), SCTE 22-3 2002", 2002,
<http://www.scte.org/standards/>.
[OSSI1.1] SCTE Data Standards Subcommittee, "DOCSIS 1.1 Part 3:
Operations Support System Interface ANSI/SCTE 23-3
2005", 2005, <http://www.scte.org/standards/>.
[OSSI2.0] CableLabs, "Data-Over-Cable Service Interface
Specifications: Operations Support System Interface
Specification SP-OSSIv2.0-I09-050812", August 2005,
<http://www.cablemodem.com/specifications/>,
<http://www.cablelabs.com/specifications/archives/>.
[RFC 1350] Sollins, K., "The TFTP Protocol (Revision 2)", STD 33,
RFC 1350, July 1992.
[RFC 4502] Waldbusser, S., "Remote Network Monitoring Management
Information Base Version 2", RFC 4502, May 2006.
[RFC 2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
Woundy & Marez Standards Track PAGE 83
RFC 4639 DOCSIS Cable Device MIB December 2006
[RFC 2578] McCloghrie, K., Perkins, D., Schoenwaelder J., Case,
J., Rose, M. and S. Waldbusser, "Structure of
Management Information Version 2 (SMIv2)", STD 58, RFC
2578, April 1999.
[RFC 2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M. and S. Waldbusser , "Textual Conventions
for SMIv2", STD 58, RFC 2579, April 1999.
[RFC 2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M. and S. Waldbusser, "Conformance Statements
for SMIv2", STD 58, RFC 2580, April 1999.
[RFC 2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext
Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.
[RFC 2669] St. Johns, M., "DOCSIS Cable Device MIB Cable Device
Management Information Base for DOCSIS compliant Cable
Modems and Cable Modem Termination Systems", RFC 2669,
August 1999.
[RFC 2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, June 2000.
[RFC 3014] Kavasseri, R., "Notification Log MIB", RFC 3014,
November 2000.
[RFC 3289] Baker, F., Chan, K., and A. Smith, "Management
Information Base for the Differentiated Services
Architecture", RFC 3289, May 2002.
[RFC 3411] Harrington, D., Presuhn, R., and B. Wijnen, "An
Architecture for Describing Simple Network Management
Protocol (SNMP) Management Frameworks", STD 62, RFC
3411, December 2002.
[RFC 3413] Levi, D., Meyer, P., and B. Stewart, "Simple Network
Management Protocol (SNMP) Applications", STD 62, RFC
3413, December 2002.
[RFC 3414] Blumenthal, U. and B. Wijnen, "User-based Security
Model (USM) for version 3 of the Simple Network
Management Protocol (SNMPv3)", STD 62, RFC 3414,
December 2002.
Woundy & Marez Standards Track PAGE 84
RFC 4639 DOCSIS Cable Device MIB December 2006
[RFC 3415] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
Access Control Model (VACM) for the Simple Network
Management Protocol (SNMP)", STD 62, RFC 3415, December
2002.
[RFC 3418] Presuhn, R., "Management Information Base (MIB) for the
Simple Network Management Protocol (SNMP)", STD 62, RFC
3418, December 2002.
[RFC 3584] Frye, R., Levi, D., Routhier, S., and B. Wijnen,
"Coexistence between Version 1, Version 2, and Version
3 of the Internet-standard Network Management
Framework", BCP 74, RFC 3584, August 2003.
[RFC 868] Postel, J. and K. Harrenstien, "Time Protocol", STD 26,
RFC 868, May 1983.
[RFC 4001] Daniele, M., Haberman, B., Routhier, S., and J.
Schoenwaelder, "Textual Conventions for Internet
Network Addresses", RFC 4001, February 2005.
[RFI1.0] SCTE Data Standards Subcommittee, "Data-Over-Cable
Service Interface Specifications: DOCSIS 1.0 Radio
Frequency Interface Specification SCTE 22-1 2002",
2002, <http://www.scte.org/standards/>.
[RFI1.1] SCTE Data Standards Subcommittee, "DOCSIS 1.1 Part 1:
Radio Frequency Interface ANSI/SCTE 23-1 2005", 2005,
<http://www.scte.org/standards/>.
[RFI2.0] CableLabs, "Data-Over-Cable Service Interface
Specifications: Radio Frequency Interface Specification
SP-RFI2.0-I11-060602", June 2006,
<http://www.cablemodem.com/specifications/>,
<http://www.cablelabs.com/specifications/archives/>.
8.2. Informative References
[RFC 1858] Ziemba, G., Reed, D., and P. Traina, "Security
Considerations r IP Fragment Filtering", RFC 1858,
October 1995.
[RFC 1945] Berners-Lee, T., Fielding, R., and H. Frystyk,
"Hypertext Traner Protocol -- HTTP/1.0", RFC 1945, May
1996.
[RFC 3128] Miller, I., "Protection Against a Variant of the Tiny
Fragment Attack (RFC 1858)", RFC 3128, June 2001.
Woundy & Marez Standards Track PAGE 85
RFC 4639 DOCSIS Cable Device MIB December 2006
[RFC 3164] Lonvick, C., "The BSD Syslog Protocol", RFC 3164,
August 2001.
[RFC 3617] Lear, E., "Uniform Resource Identifier (URI) Scheme and
Applicbility Statement for the Trivial File Transfer
Protocol (TFTP)", RFC 3617, October 2003.
[RFC 4547] Ahmad, A. and G. Nakanishi, "Event Notification
Management Information Base for Data over Cable Service
Interface Specifications (DOCSIS) Compliant Cable
Modems and Cable Modem Termination Systems", RFC 4547,
June 2006.
[RFC 1224] Steinberg, L., "Techniques for managing asynchronously
generated alerts", RFC 1224, May 1991.
[RFC 3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for
Internet-Standard Management Framework", RFC 3410,
December 2002.
[RFC 4036] Sawyer, W., "Management Information Base for Data Over
Cable Service Interface Specification (DOCSIS) Cable
Modem Termination Systems for Subscriber Management",
RFC 4036, April 2005.
[RFC 4323] Patrick, M. and W. Murwin, "Data Over Cable System
Interface Specification Quality of Service Management
Information Base (DOCSIS-QoS MIB)", RFC 4323, January
2006.
[MULPI3.0] CableLabs, "Data-Over-Cable Service Interface
Specifications: DOCSIS 3.0 MAC and Upper Layer
Protocols Interface Specification CM-SP-MULPIv3.0-I01-
060804", August 2006,
<http://www.cablemodem.com/specifications/>,
<http://www.cablelabs.com/specifications/archives/>.
Woundy & Marez Standards Track PAGE 86
RFC 4639 DOCSIS Cable Device MIB December 2006
Authors' Addresses
Richard Woundy
Comcast Cable
27 Industrial Avenue
Chelmsford, MA 01824
USA
Phone: +1 978 244 4010
EMail: richard_woundy@cable.comcast.com
Kevin Marez
Motorola Corporation
6450 Sequence Drive
San Diego, CA 92121
USA
Phone: +1 858 404 3785
EMail: kevin.marez@motorola.com
Woundy & Marez Standards Track PAGE 87
RFC 4639 DOCSIS Cable Device MIB December 2006
Full Copyright Statement
Copyright © The IETF Trust (2006).
This document is subject to the rights, licenses and restrictions
contained in BCP 78, and except as set forth therein, the authors
retain all their rights.
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Woundy & Marez Standards Track PAGE 88
Cable Device Management Information Base for Data-Over-Cable Service Interface Specification (DOCSIS) Compliant Cable Modems and Cable Modem Termination Systems
RFC TOTAL SIZE: 188220 bytes
PUBLICATION DATE: Thursday, December 21st, 2006
LEGAL RIGHTS: The IETF Trust (see BCP 78)
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