RSVP-TE Extensions for Collecting Shared Risk Link Group (SRLG) Information
RFC 8001

Document Type RFC - Proposed Standard (January 2017; No errata)
Last updated 2017-01-12
Replaces draft-ietf-ccamp-rsvp-te-srlg-collect
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication (wg milestone: Jan 2015 - Submit -ietf-ccamp-r... )
Document shepherd Vishnu Beeram
Shepherd write-up Show (last changed 2016-05-27)
IESG IESG state RFC 8001 (Proposed Standard)
Consensus Boilerplate Yes
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Responsible AD Deborah Brungard
Send notices to (None)
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                     F. Zhang, Ed.
Request for Comments: 8001                                        Huawei
Category: Standards Track                       O. Gonzalez de Dios, Ed.
ISSN: 2070-1721                                    Telefonica Global CTO
                                                             C. Margaria
                                                                 Juniper
                                                              M. Hartley
                                                                  Z. Ali
                                                                   Cisco
                                                            January 2017

                   RSVP-TE Extensions for Collecting
               Shared Risk Link Group (SRLG) Information

Abstract

   This document provides extensions for Resource Reservation Protocol -
   Traffic Engineering (RSVP-TE), including GMPLS, to support automatic
   collection of Shared Risk Link Group (SRLG) information for the TE
   link formed by a Label Switched Path (LSP).

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc8001.

Zhang, et al.                Standards Track                    [Page 1]
RFC 8001             RSVP-TE Ext for Collecting SRLG        January 2017

Copyright Notice

   Copyright (c) 2017 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
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Applicability Example: Dual-Homing . . . . . . . . . . . .  3
   2.  Requirements Language  . . . . . . . . . . . . . . . . . . . .  5
   3.  RSVP-TE Requirements . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  SRLG Collection Indication . . . . . . . . . . . . . . . .  5
     3.2.  SRLG Collection  . . . . . . . . . . . . . . . . . . . . .  6
     3.3.  SRLG Update  . . . . . . . . . . . . . . . . . . . . . . .  6
     3.4.  SRLG ID Definition . . . . . . . . . . . . . . . . . . . .  6
   4.  Encodings  . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     4.1.  SRLG Collection Flag . . . . . . . . . . . . . . . . . . .  6
     4.2.  RRO SRLG Subobject   . . . . . . . . . . . . . . . . . . .  7
   5.  Signaling Procedures . . . . . . . . . . . . . . . . . . . . .  8
     5.1.  SRLG Collection  . . . . . . . . . . . . . . . . . . . . .  8
     5.2.  SRLG Update  . . . . . . . . . . . . . . . . . . . . . . . 10
     5.3  Domain Boundaries . . . . . . . . . . . . . . . . . . . . . 10
     5.4.  Compatibility  . . . . . . . . . . . . . . . . . . . . . . 11
   6.  Manageability Considerations . . . . . . . . . . . . . . . . . 11
     6.1.  Policy Configuration . . . . . . . . . . . . . . . . . . . 11
     6.2.  Coherent SRLG IDs  . . . . . . . . . . . . . . . . . . . . 11
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 12
     8.1.  RSVP Attribute Bit Flags . . . . . . . . . . . . . . . . . 12
     8.2.  ROUTE_RECORD Object  . . . . . . . . . . . . . . . . . . . 12
     8.3.  Policy Control Failure Error Subcodes  . . . . . . . . . . 13
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 13
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 14
   Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . 15
   Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16

Zhang, et al.                Standards Track                    [Page 2]
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