datatracker.ietf.org
Sign in
Version 5.6.2.p5, 2014-08-04
Report a bug

RSVP-TE Extensions for Collecting SRLG Information
draft-ietf-ccamp-rsvp-te-srlg-collect-06

Document type: Active Internet-Draft (ccamp WG)
Document stream: IETF
Last updated: 2014-07-31
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: WG Document
Document shepherd: Deborah Brungard

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

Network Working Group                                      F. Zhang, Ed.
Internet-Draft                                                    Huawei
Intended status: Standards Track                O. Gonzalez de Dios, Ed.
Expires: February 1, 2015                          Telefonica Global CTO
                                                                   D. Li
                                                                  Huawei
                                                             C. Margaria

                                                              M. Hartley
                                                                  Z. Ali
                                                                   Cisco
                                                           July 31, 2014

           RSVP-TE Extensions for Collecting SRLG Information
                draft-ietf-ccamp-rsvp-te-srlg-collect-06

Abstract

   This document provides extensions for the Resource ReserVation
   Protocol-Traffic Engineering (RSVP-TE) to support automatic
   collection of Shared Risk Link Group (SRLG) Information for the TE
   link formed by a LSP.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on February 1, 2015.

Copyright Notice

   Copyright (c) 2014 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

Zhang, et al.           Expires February 1, 2015                [Page 1]
Internet-Draft       RSVP-TE Ext for Collecting SRLG           July 2014

   (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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  RSVP-TE Requirements  . . . . . . . . . . . . . . . . . . . .   3
     3.1.  SRLG Collection Indication  . . . . . . . . . . . . . . .   3
     3.2.  SRLG Collection . . . . . . . . . . . . . . . . . . . . .   3
     3.3.  SRLG Update . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Encodings . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  SRLG Collection Flag  . . . . . . . . . . . . . . . . . .   3
     4.2.  SRLG sub-object . . . . . . . . . . . . . . . . . . . . .   4
   5.  Signaling Procedures  . . . . . . . . . . . . . . . . . . . .   5
     5.1.  SRLG Collection . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  SRLG Update . . . . . . . . . . . . . . . . . . . . . . .   7
     5.3.  Compatibility . . . . . . . . . . . . . . . . . . . . . .   7
   6.  Manageability Considerations  . . . . . . . . . . . . . . . .   7
     6.1.  Policy Configuration  . . . . . . . . . . . . . . . . . .   7
     6.2.  Coherent SRLG IDs . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  RSVP Attribute Bit Flags  . . . . . . . . . . . . . . . .   8
     8.2.  ROUTE_RECORD Object . . . . . . . . . . . . . . . . . . .   8
     8.3.  Policy Control Failure Error subcodes . . . . . . . . . .   9
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   9
     10.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   It is important to understand which TE links in the network might be
   at risk from the same failures.  In this sense, a set of links may
   constitute a 'shared risk link group' (SRLG) if they share a resource

[include full document text]