Extensions to Resource Reservation Protocol For Fast Reroute of Traffic Engineering GMPLS LSPs
draft-ietf-teas-gmpls-lsp-fastreroute-06

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Document Type Active Internet-Draft (teas WG)
Last updated 2016-10-01
Replaces draft-tsaad-ccamp-rsvpte-bidir-lsp-fastreroute
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TEAS Working Group                                            M. Taillon
Internet-Draft                                              T. Saad, Ed.
Intended Status: Standards Track                          R. Gandhi, Ed.
Expires: April 4, 2017                                            Z. Ali
                                                           Cisco Systems
                                                         October 1, 2016

    Extensions to Resource Reservation Protocol For Fast Reroute of
                  Traffic Engineering GMPLS LSPs
             draft-ietf-teas-gmpls-lsp-fastreroute-06

Abstract

   This document defines Resource Reservation Protocol - Traffic
   Engineering (RSVP-TE) signaling extensions to support Fast Reroute
   (FRR) of Packet Switched Capable (PSC) Generalized Multi-Protocol
   Label Switching (GMPLS) Label Switched Paths (LSPs).  These signaling
   extensions allow the coordination of a bidirectional bypass tunnel
   assignment protecting a common facility in both forward and reverse
   directions of a co-routed bidirectional LSP.  In addition, these
   extensions enable the re-direction of bidirectional traffic and
   signaling onto bypass tunnels that ensure co-routedness of data and
   signaling paths in the forward and reverse directions after FRR to
   avoid RSVP soft-state timeout.

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   Copyright (c) 2016 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
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Taillon et al.           Expires April 4, 2017                  [Page 1]
Internet-Draft           FRR for TE GMPLS LSPs           October 1, 2016

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  4
     2.1.  Key Word Definitions . . . . . . . . . . . . . . . . . . .  4
     2.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
     2.3.  Acronyms and Abbreviations . . . . . . . . . . . . . . . .  5
   3.  Fast Reroute For Unidirectional GMPLS LSPs . . . . . . . . . .  5
   4.  Fast Reroute for Bidirectional GMPLS LSPs  . . . . . . . . . .  5
     4.1.  Bidirectional GMPLS Bypass Tunnel Direction  . . . . . . .  5
     4.2.  Merge Point Labels . . . . . . . . . . . . . . . . . . . .  6
     4.3.  Merge Point Addresses  . . . . . . . . . . . . . . . . . .  6
     4.4.  RRO IPv4/IPv6 Subobject Flags  . . . . . . . . . . . . . .  6
     4.5.  Bidirectional Bypass Tunnel Assignment Co-ordination . . .  7
       4.5.1.  Bidirectional Bypass Tunnel Assignment Signaling
               Procedure  . . . . . . . . . . . . . . . . . . . . . .  7
       4.5.2.  Multiple Bidirectional Bypass Tunnel Assignments . . .  8
     4.6.  Fast Reroute Procedure After Link Failure  . . . . . . . .  9
   5.  Link Protection for Bidirectional GMPLS LSPs . . . . . . . . . 10
     5.1.  Behavior After Link Failure  . . . . . . . . . . . . . . . 10
     5.2.  Revertive Behavior After Fast Reroute  . . . . . . . . . . 11
   6.  Node Protection for Bidirectional GMPLS LSPs . . . . . . . . . 11
     6.1.  Behavior After Link Failure  . . . . . . . . . . . . . . . 12
     6.2.  Behavior After Link Failure To Re-coroute  . . . . . . . . 12
     6.3.  Revertive Behavior After Fast Reroute  . . . . . . . . . . 13
   7.  Unidirectional Link Failures . . . . . . . . . . . . . . . . . 14
   8.  Message and Object Definitions . . . . . . . . . . . . . . . . 14
     8.1.  BYPASS_ASSIGNMENT Subobject  . . . . . . . . . . . . . . . 14
     8.2.  FRR Bypass Assignment Error Notify Message . . . . . . . . 16
   9.  Compatibility  . . . . . . . . . . . . . . . . . . . . . . . . 16
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