RSVP Extensions for RMR
draft-deshmukh-teas-rsvp-rmr-extension-00

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Last updated 2018-05-11 (latest revision 2018-02-13)
Replaces draft-deshmukh-mpls-rsvp-rmr-extension
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TEAS WG                                                      A. Deshmukh
Internet-Draft                                               K. Kompella
Intended status: Standards Track                  Juniper Networks, Inc.
Expires: August 17, 2018                               February 13, 2018

                        RSVP Extensions for RMR
               draft-deshmukh-teas-rsvp-rmr-extension-00

Abstract

   Rings are the most common topology 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 protocol for signaling MPLS
   label switched paths in rings.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

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
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   This Internet-Draft will expire on August 17, 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
   Provisions Relating to IETF Documents

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   (https://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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   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 . . . . . . . . . . . . . . . . . . . . . .   5
       4.2.1.  Path Propagation for RMR  . . . . . . . . . . . . . .   7
       4.2.2.  Resv Processing for RMR . . . . . . . . . . . . . . .   8
     4.3.  Protection  . . . . . . . . . . . . . . . . . . . . . . .   9
     4.4.  Ring changes  . . . . . . . . . . . . . . . . . . . . . .  10
     4.5.  Bandwidth management  . . . . . . . . . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   6.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

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 ring node 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.

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   Section 2 covers the terminology used in this document.  Section 3
   presents the RSVP protocol extensions needed to support MPLS rings.
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