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OSPF Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS) (RFC4203)

IP.com Disclosure Number: IPCOM000130543D
Original Publication Date: 2005-Oct-01
Included in the Prior Art Database: 2005-Oct-26
Document File: 12 page(s) / 23K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Kompella: AUTHOR [+4]

Abstract

This document specifies encoding of extensions to the OSPF routing protocol in support of Generalized Multi-Protocol Label Switching (GMPLS).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 12% of the total text.

Network Working Group                                   K. Kompella, Ed.
Request for Comments: 4203                               Y. Rekhter, Ed.
Updates: 3630                                           Juniper Networks
Category: Standards Track                                   October 2005


                     OSPF Extensions in Support of
           Generalized Multi-Protocol Label Switching (GMPLS)

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This document specifies encoding of extensions to the OSPF routing
   protocol in support of Generalized Multi-Protocol Label Switching
   (GMPLS).

1.  Introduction

   This document specifies extensions to the OSPF routing protocol
   [OSPF] in support of carrying link state information for Generalized
   Multi-Protocol Label Switching (GMPLS).  The set of required
   enhancements to OSPF are outlined in [GMPLS-ROUTING].

   In this section, we define the enhancements to the Traffic
   Engineering (TE) properties of GMPLS TE links that can be announced
   in OSPF TE LSAs.  The TE LSA, which is an opaque LSA with area
   flooding scope [OSPF-TE], has only one top-level Type/Length/Value
   (TLV) triplet and has one or more nested sub-TLVs for extensibility.
   The top-level TLV can take one of two values (1) Router Address or
   (2) Link.  In this document, we enhance the sub-TLVs for the Link TLV
   in support of GMPLS.  Specifically, we add the following sub-TLVs to
   the Link TLV:


Kompella & Rekhter          Standards Track                     [Page 1]
RFC 4203                OSPF Extensions in MPLS             October 2005


   Sub-TLV Type      Length    Name
             11           8    Link Local/Remote Identifiers
             14           4    Link Protection Type
             15    variable    Interface Switching Capability Descriptor
             16    variable    Shared Risk Link Group

   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 BCP 14, RFC 2119
   [RFC2119].

1.1.  Link Local/Remote Identifiers

   Link Local/Remote Identifiers is a sub-TLV of the Link TLV.  The type
  ...