GMPLS Signaling Extensions for Shared Mesh Protection
draft-he-teas-gmpls-signaling-smp-00

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TEAS Working Group                                           J. He
Internet Draft                                             I. Busi 
Updates (if published): RFC 4872                            Huawei 
Intended status: Standards Track  
 
Expires: April 20, 2019                            October 22, 2018 
 

          GMPLS Signaling Extensions for Shared Mesh Protection 
                draft-he-teas-gmpls-signaling-smp-00.txt 

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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.  

 
 
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   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