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IETF RFC 7537
Last modified on Tuesday, May 12th, 2015
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Internet Engineering Task Force (IETF) B. Decraene
Request for Comments: 7537 Orange
Updates: 4379, 6424 N. Akiya
Category: Standards Track C. Pignataro
ISSN: 2070-1721 Cisco Systems
L. Andersson
S. Aldrin
Huawei Technologies
May 2015
IANA Registries for LSP Ping Code Points
 Abstract
RFCs 4379 and 6424 created name spaces for Multi-Protocol Label
Switching (MPLS) Label Switched Path (LSP) Ping. However, those RFCs
did not create the corresponding IANA registries for Downstream
Mapping object Flags (DS Flags), Multipath Types, Pad TLVs, and
Interface and Label Stack Address Types.
There is now a need to make further code point allocations from these
name spaces. This document updates RFCs 4379 and 6424 in that it
creates IANA registries for that purpose.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/RFC 7537.
Decraene, et al. Standards Track PAGE 1 
RFC 7537 IANA Registries for LSP Ping May 2015
Copyright Notice
Copyright (c) 2015 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
2.1. DS Flags . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Multipath Types . . . . . . . . . . . . . . . . . . . . . 3
2.3. Pad Type . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4. Interface and Label Stack Address Type . . . . . . . . . 5
3. Security Considerations . . . . . . . . . . . . . . . . . . . 5
4. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1. Normative References . . . . . . . . . . . . . . . . . . 6
4.2. Informative References . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
[RFC 4379] and [RFC 6424] created name spaces for MPLS LSP Ping.
However, those RFCs did not create the corresponding IANA registries
for DS Flags, Multipath Types, Pad TLVs, and Interface and Label
Stack Address Types.
There is now a need to make further code point allocations from these
name spaces. In particular, [ENTROPY-LSP-PING] and [LSP-PING-LAG]
request new DS Flags and Multipath Type allocations.
This document updates [RFC 4379] and [RFC 6424] in that it creates IANA
registries for that purpose.
Note that "DS Flags" and "Multipath Type" are fields included in two
TLVs defined in the "Multi-Protocol Label Switching (MPLS) Label
Switched Paths (LSPs) Ping Parameters - TLVs" registry: Downstream
Mapping (DEPRECATED) (value 2) and Downstream Detailed Mapping (value
20). Modification to either registry will affect both TLVs.
Decraene, et al. Standards Track PAGE 2
RFC 7537 IANA Registries for LSP Ping May 2015
2. IANA Considerations
Per this document, IANA has created new registries within the "Multi-
Protocol Label Switching (MPLS) Label Switched Paths (LSPs) Ping
Parameters" [IANA-MPLS-LSP-PING] registry to maintain DS Flags,
Multipath Types, Pad TLVs, and Interface and Label Stack Address
Types fields. The registry names and initial values are described in
the immediate subsections that follow.
2.1. DS Flags
[RFC 4379] defines the Downstream Mapping (DSMAP) TLV, which has Type
2 assigned from the "Multi-Protocol Label Switching (MPLS) Label
Switched Paths (LSPs) Ping Parameters - TLVs" registry.
[RFC 6424] defines the Downstream Detailed Mapping (DDMAP) TLV, which
has Type 20 assigned from the "Multi-Protocol Label Switching (MPLS)
Label Switched Paths (LSPs) Ping Parameters - TLVs" registry.
DSMAP has been deprecated by DDMAP, but both TLVs share a field: DS
Flags.
IANA has created and now maintains a registry entitled "DS Flags".
The registration policy for this registry is Standards Action
[RFC 5226].
IANA has made the following initial assignments:
Registry Name: DS Flags
Bit number Name Reference
---------- ---------------------------------------- ---------
7 N: Treat as a Non-IP Packet RFC 4379
6 I: Interface and Label Stack Object Request RFC 4379
5-0 Unassigned
2.2. Multipath Types
IANA has created and now maintains a registry entitled "Multipath
Types".
The registration policies [RFC 5226] for this registry are as follows:
0-250 Standards Action
251-254 Experimental Use
255 Standards Action
Decraene, et al. Standards Track PAGE 3
RFC 7537 IANA Registries for LSP Ping May 2015
IANA has made the following initial assignments:
Registry Name: Multipath Types
Value Meaning Reference
---------- ---------------------------------------- ---------
0 no multipath RFC 4379
1 Unassigned
2 IP address RFC 4379
3 Unassigned
4 IP address range RFC 4379
5-7 Unassigned
8 Bit-masked IP address set RFC 4379
9 Bit-masked label set RFC 4379
10-250 Unassigned
251-254 Experimental Use This document
255 Reserved This document
2.3. Pad Type
IANA has created and now maintains a registry entitled "Pad Types".
The registration policies [RFC 5226] for this registry are:
0-250 Standards Action
251-254 Experimental Use
255 Standards Action
IANA has made the following initial assignments:
Registry Name: Pad Types
Value Meaning Reference
---------- ---------------------------------------- ---------
0 Reserved This document
1 Drop Pad TLV from reply RFC 4379
2 Copy Pad TLV to reply RFC 4379
3-250 Unassigned
251-254 Experimental Use This document
255 Reserved This document
Decraene, et al. Standards Track PAGE 4
RFC 7537 IANA Registries for LSP Ping May 2015
2.4. Interface and Label Stack Address Type
IANA has created and now maintains a registry entitled "Interface and
Label Stack Address Types".
The registration policies [RFC 5226] for this registry are:
0-250 Standards Action
251-254 Experimental Use
255 Standards Action
IANA has made the following initial assignments:
Registry Name: Interface and Label Stack Address Types
Value Meaning Reference
---------- ---------------------------------------- ---------
0 Reserved This document
1 IPv4 Numbered RFC 4379
2 IPv4 Unnumbered RFC 4379
3 IPv6 Numbered RFC 4379
4 IPv6 Unnumbered RFC 4379
5-250 Unassigned
251-254 Experimental Use This document
255 Reserved This document
3. Security Considerations
This document simply creates IANA registries for code points defined
in [RFC 4379] and [RFC 6424]. Thus, there are no new security
concerns.
Decraene, et al. Standards Track PAGE 5
RFC 7537 IANA Registries for LSP Ping May 2015
4. References
4.1. Normative References
[RFC 4379] Kompella, K. and G. Swallow, "Detecting Multi-Protocol
Label Switched (MPLS) Data Plane Failures", RFC 4379,
February 2006, <http://www.rfc-editor.org/info/RFC 4379>.
[RFC 6424] Bahadur, N., Kompella, K., and G. Swallow, "Mechanism for
Performing Label Switched Path Ping (LSP Ping) over MPLS
Tunnels", RFC 6424, November 2011,
<http://www.rfc-editor.org/info/RFC 6424>.
4.2. Informative References
[ENTROPY-LSP-PING]
Akiya, N., Swallow, G., Pignataro, C., Malis, A., and S.
Aldrin, "Label Switched Path (LSP) and Pseudowire (PW)
Ping/Trace over MPLS Network using Entropy Labels (EL)",
Work in Progress, draft-ietf-mpls-entropy-lsp-ping-00,
December 2014.
[IANA-MPLS-LSP-PING]
IANA, "Multi-Protocol Label Switching (MPLS) Label
Switched Paths (LSPs) Ping Parameters",
<http://www.iana.org/assignments/
mpls-lsp-ping-parameters>.
[LSP-PING-LAG]
Akiya, N., Swallow, G., Litkowski, S., Decraene, B., and
J. Drake, "Label Switched Path (LSP) Ping/Trace Multipath
Support for Link Aggregation Group (LAG) Interfaces", Work
in Progress, draft-ietf-mpls-lsp-ping-lag-multipath-00,
January 2015.
[RFC 5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008, <http://www.rfc-editor.org/info/RFC 5226>.
Decraene, et al. Standards Track PAGE 6
RFC 7537 IANA Registries for LSP Ping May 2015
Authors' Addresses
Bruno Decraene
Orange
EMail: bruno.decraene@orange.com
Nobo Akiya
Cisco Systems
EMail: nobo.akiya.dev@gmail.com
Carlos Pignataro
Cisco Systems
EMail: cpignata@cisco.com
Loa Andersson
Huawei Technologies
EMail: loa@mail01.huawei.com
Sam Aldrin
Huawei Technologies
EMail: aldrin.ietf@gmail.com
Decraene, et al. Standards Track PAGE 7
RFC TOTAL SIZE: 11895 bytes
PUBLICATION DATE: Tuesday, May 12th, 2015
LEGAL RIGHTS: The IETF Trust (see BCP 78)
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