GMPLS Signaling Extensions for Shared Mesh Protection
draft-ietf-teas-gmpls-signaling-smp-00
TEAS Working Group J. He
Internet Draft I. Busi
Updates (if published): RFC 4872 Huawei
Intended status: Standards Track
Expires: July 14, 2019 January 15, 2019
GMPLS Signaling Extensions for Shared Mesh Protection
draft-ietf-teas-gmpls-signaling-smp-00.txt
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<He, et al.> Expires July 14, 2019 [Page 1]
Internet-Draft GMPLS Extension for SMP January 2019
Abstract
ITU-T Recommendation G.808.3 [G808.3] defines the generic aspects
of a shared mesh protection (SMP) mechanism, where the difference
between SMP and shared mesh restoration (SMR) is also identified.
ITU-T Recommendation G.873.3 [G873.3] defines the protection
switching operation and associated protocol for shared mesh
protection (SMP) at the optical data unit (ODU) layer. RFC 7412
provides requirements for any mechanism that would be used to
implement SMP in an MPLS-TP network.
This document updates RFC 4872 to provide the extensions to the
Generalized Multi-Protocol Label Switching (GMPLS) signaling to
support the control of the shared mesh protection.
Table of Contents
1. Introduction ................................................2
2. Conventions used in this document............................3
3. SMP Definition ..............................................3
4. GMPLS Signaling Extension for SMP............................4
4.1. Identifiers ............................................5
4.2. Signaling Primary LSPs..................................6
4.3. Signaling Secondary LSPs................................6
5. Updates to PROTECTION Object.................................7
5.1. New Protection Type.....................................7
5.2. Other Updates ..........................................7
6. Security Considerations......................................8
7. IANA Considerations .........................................8
8. References ..................................................8
8.1. Normative References....................................8
8.2. Informative References..................................9
1. Introduction
RFC 4872 [RFC4872] defines extension of RSVP-TE to support shared
mesh restoration (SMR) mechanism. Shared mesh restoration can be
seen as a particular case of pre-planned LSP rerouting that
reduces the recovery resource requirements by allowing multiple
protecting LSPs to share common link and node resources. The
recovery resources for the protecting LSPs are pre-reserved during
the provisioning phase, and an explicit restoration signaling is
required to activate (i.e., commit resource allocation at the data
plane) a specific protecting LSP instantiated during the
provisioning phase.
<He, et al.> Expires July 14, 2019 [Page 2]
Internet-Draft GMPLS Extension for SMP January 2019
ITU-T Recommendation G.808.3 [G808.3] defines the generic aspects
of a shared mesh protection (SMP) mechanism. ITU-T Recommendation
G.873.3 [G873.3] defines the protection switching operation and
associated protocol for shared mesh protection (SMP) at the optical
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