RSVP-TE Summary Fast Reroute Extensions for LSP Tunnels
draft-mtaillon-mpls-summary-frr-rsvpte-05

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Last updated 2017-03-09
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MPLS Working Group                                            M. Taillon
Internet-Draft                                              T. Saad, Ed.
Intended status: Standards Track                               R. Gandhi
Expires: September 8, 2017                           Cisco Systems, Inc.
                                                             A. Deshmukh
                                                                 M. Jork
                                                               V. Beeram
                                                        Juniper Networks
                                                          March 07, 2017

        RSVP-TE Summary Fast Reroute Extensions for LSP Tunnels
               draft-mtaillon-mpls-summary-frr-rsvpte-05

Abstract

   This document defines Resource Reservation Protocol (RSVP) Traffic-
   Engineering (TE) signaling extensions that reduce the amount of RSVP
   signaling required for Fast Reroute (FRR) procedures and subsequently
   improve the scalability of the RSVP-TE signaling when undergoing FRR
   convergence after a link or node failure.  Such extensions allow the
   RSVP message exchange between the Point of Local Repair (PLR) and the
   Merge Point (MP) to be independent of the number of protected Label
   Switched Paths (LSPs) traversing between them when facility bypass
   FRR protection is used.  The signaling extensions are fully backwards
   compatible with nodes that do not support them.

Status of This Memo

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   This Internet-Draft will expire on September 8, 2017.

Taillon, et al.         Expires September 8, 2017               [Page 1]
Internet-Draft             RSVP-TE Summary FRR                March 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   3
     2.1.  Key Word Definitions  . . . . . . . . . . . . . . . . . .   3
     2.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Summary FRR Signaling Procedures  . . . . . . . . . . . . . .   3
     3.1.  Signaling Procedures Prior to Failure . . . . . . . . . .   4
       3.1.1.  Extended ASSOCIATION Object . . . . . . . . . . . . .   5
       3.1.2.  PLR Summary FRR Signaling Procedure . . . . . . . . .   9
       3.1.3.  MP Summary FRR Signaling Procedure  . . . . . . . . .   9
     3.2.  Signaling Procedures Post Failure . . . . . . . . . . . .  10
       3.2.1.  SUMMARY_FRR_BYPASS Object . . . . . . . . . . . . . .  10
       3.2.2.  PLR Summary FRR Signaling Procedure . . . . . . . . .  12
       3.2.3.  MP Summary FRR Signaling Procedure  . . . . . . . . .  12
     3.3.  Refreshing Summary FRR Active LSPs  . . . . . . . . . . .  13
   4.  Compatibility . . . . . . . . . . . . . . . . . . . . . . . .  13
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  14
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   The Fast Reroute (FRR) procedures defined in [RFC4090] describe the
   mechanisms for the Point of Local Repair (PLR) to reroute traffic and
   signaling of a protected RSVP-TE LSP onto the bypass tunnel in the
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