RSVP Extensions for RMR
draft-ietf-teas-rsvp-rmr-extension-01

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Last updated 2018-06-29
Replaces draft-deshmukh-teas-rsvp-rmr-extension
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TEAS WG                                                      A. Deshmukh
Internet-Draft                                               K. Kompella
Intended status: Standards Track                  Juniper Networks, Inc.
Expires: December 30, 2018                                 June 28, 2018

                        RSVP Extensions for RMR
                 draft-ietf-teas-rsvp-rmr-extension-01

Abstract

   Ring topology is commonly found in access and aggregation networks.
   However, the use of MPLS as the transport protocol for rings is very
   limited today.  draft-ietf-mpls-rmr-02 describes a mechanism to
   handle rings efficiently using MPLS.  This document describes the
   extensions to the RSVP-TE protocol for signaling MPLS label switched
   paths in rings.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on December 30, 2018.

Copyright Notice

   Copyright (c) 2018 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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   (https://trustee.ietf.org/license-info) in effect on the date of
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   include Simplified BSD License text as described in Section 4.e of

Deshmukh & Kompella     Expires December 30, 2018               [Page 1]
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  RSVP Extensions . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Session Object  . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  SENDER_TEMPLATE,FILTER_SPEC Objects . . . . . . . . . . .   5
   4.  Ring Signaling Procedures . . . . . . . . . . . . . . . . . .   5
     4.1.  Differences from regular RSVP-TE LSPs . . . . . . . . . .   5
     4.2.  LSP signaling . . . . . . . . . . . . . . . . . . . . . .   6
       4.2.1.  Path Propagation for RMR  . . . . . . . . . . . . . .   8
       4.2.2.  Resv Processing for RMR . . . . . . . . . . . . . . .   8
     4.3.  Protection  . . . . . . . . . . . . . . . . . . . . . . .   9
     4.4.  Ring changes  . . . . . . . . . . . . . . . . . . . . . .  10
     4.5.  Express Links . . . . . . . . . . . . . . . . . . . . . .  11
     4.6.  Bandwidth management  . . . . . . . . . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   6.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   This document extends RSVP-TE [RFC3209] to establish label-switched
   path (LSP) tunnels in the ring topology.  Rings are auto-discovered
   using the mechanisms mentioned in the [draft-ietf-mpls-rmr-02].
   Either IS-IS [RFC5305] or OSPF[RFC3630] can be used as the IGP for
   auto-discovering the rings.

   After the rings are auto-discovered, each node in the ring knows its
   clockwise(CW) and anti-clockwise (AC) ring neighbors and its ring
   links.  All of the express links in the ring also get identified as
   part of the auto-discovery process.  At this point, every node in the
   ring informs the RSVP protocol to begin the signaling of the ring
   LSPs.

   Section 2 covers the terminology used in this document.  Section 3
   presents the RSVP protocol extensions needed to support MPLS rings.
   Section 4 describes the procedures of RSVP LSP signaling in detail.

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