Extensions to RSVP-TE for LSP Ingress FRR Protection
draft-ietf-teas-rsvp-ingress-protection-11

Document Type Active Internet-Draft (teas WG)
Last updated 2017-11-13 (latest revision 2017-10-15)
Replaces draft-ietf-mpls-rsvp-ingress-protection
Stream IETF
Intended RFC status Experimental
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Document shepherd Vishnu Beeram
Shepherd write-up Show (last changed 2017-11-03)
IESG IESG state Expert Review
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Responsible AD Deborah Brungard
Send notices to Vishnu Beeram <vishnupavan@gmail.com>, Vishnu Beeram <vbeeram@juniper.net>
Internet Engineering Task Force                             H. Chen, Ed.
Internet-Draft                                       Huawei Technologies
Intended status: Experimental                              R. Torvi, Ed.
Expires: April 18, 2018                                 Juniper Networks
                                                        October 15, 2017

          Extensions to RSVP-TE for LSP Ingress FRR Protection
             draft-ietf-teas-rsvp-ingress-protection-11.txt

Abstract

   This document describes extensions to Resource Reservation Protocol -
   Traffic Engineering (RSVP-TE) for locally protecting the ingress node
   of a Point-to-Point (P2P) or Point-to-Multipoint (P2MP) Traffic
   Engineered (TE) Label Switched Path (LSP).

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Chen & Torvi             Expires April 18, 2018                 [Page 1]
Internet-Draft           LSP Ingress Protection             October 2017

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Ingress Local Protection . . . . . . . . . . . . . . . . .  4
   2.  Ingress Failure Detection  . . . . . . . . . . . . . . . . . .  5
     2.1.  Source Detects Failure . . . . . . . . . . . . . . . . . .  5
     2.2.  Backup and Source Detect Failure . . . . . . . . . . . . .  5
   3.  Backup Forwarding State  . . . . . . . . . . . . . . . . . . .  6
     3.1.  Forwarding State for Backup LSP  . . . . . . . . . . . . .  6
   4.  Protocol Extensions  . . . . . . . . . . . . . . . . . . . . .  6
     4.1.  INGRESS_PROTECTION Object  . . . . . . . . . . . . . . . .  6
       4.1.1.  Subobject: Backup Ingress IPv4 Address . . . . . . . .  8
       4.1.2.  Subobject: Backup Ingress IPv6 Address . . . . . . . .  9
       4.1.3.  Subobject: Ingress IPv4 Address  . . . . . . . . . . .  9
       4.1.4.  Subobject: Ingress IPv6 Address  . . . . . . . . . . .  9
       4.1.5.  Subobject: Traffic Descriptor  . . . . . . . . . . . . 10
       4.1.6.  Subobject: Label-Routes  . . . . . . . . . . . . . . . 11
   5.  Behavior of Ingress Protection . . . . . . . . . . . . . . . . 11
     5.1.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . 11
       5.1.1.  Relay-Message Method . . . . . . . . . . . . . . . . . 11
       5.1.2.  Proxy-Ingress Method . . . . . . . . . . . . . . . . . 12
     5.2.  Ingress Behavior . . . . . . . . . . . . . . . . . . . . . 13
       5.2.1.  Relay-Message Method . . . . . . . . . . . . . . . . . 13
       5.2.2.  Proxy-Ingress Method . . . . . . . . . . . . . . . . . 14
     5.3.  Backup Ingress Behavior  . . . . . . . . . . . . . . . . . 15
       5.3.1.  Backup Ingress Behavior in Off-path Case . . . . . . . 16
       5.3.2.  Backup Ingress Behavior in On-path Case  . . . . . . . 18
       5.3.3.  Failure Detection and Refresh PATH Messages  . . . . . 19
     5.4.  Revertive Behavior . . . . . . . . . . . . . . . . . . . . 19
       5.4.1.  Revert to Primary Ingress  . . . . . . . . . . . . . . 19
       5.4.2.  Global Repair by Backup Ingress  . . . . . . . . . . . 20
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 20
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 20
   8.  Co-authors and Contributors  . . . . . . . . . . . . . . . . . 21
   9.  Acknowledgement  . . . . . . . . . . . . . . . . . . . . . . . 23
   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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