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Generalized Multi-Protocol Label Switching (GMPLS) Architecture (RFC3945)

IP.com Disclosure Number: IPCOM000032277D
Original Publication Date: 2004-Oct-01
Included in the Prior Art Database: 2004-Oct-29

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

E. Mannie: AUTHOR [+2]

Abstract

Future data and transmission networks will consist of elements such as routers, switches, Dense Wavelength Division Multiplexing (DWDM) systems, Add-Drop Multiplexors (ADMs), photonic cross-connects (PXCs), optical cross-connects (OXCs), etc. that will use Generalized Multi-Protocol Label Switching (GMPLS) to dynamically provision resources and to provide network survivability using protection and restoration techniques.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group                                     E. Mannie, Ed.

Request for Comments: 3945                                  October 2004

Category: Standards Track

    Generalized Multi-Protocol Label Switching (GMPLS) Architecture

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 (2004).

Abstract

   Future data and transmission networks will consist of elements such

   as routers, switches, Dense Wavelength Division Multiplexing (DWDM)

   systems, Add-Drop Multiplexors (ADMs), photonic cross-connects

   (PXCs), optical cross-connects (OXCs), etc. that will use Generalized

   Multi-Protocol Label Switching (GMPLS) to dynamically provision

   resources and to provide network survivability using protection and

   restoration techniques.

   This document describes the architecture of GMPLS.  GMPLS extends

   MPLS to encompass time-division (e.g., SONET/SDH, PDH, G.709),

   wavelength (lambdas), and spatial switching (e.g., incoming port or

   fiber to outgoing port or fiber).  The focus of GMPLS is on the

   control plane of these various layers since each of them can use

   physically diverse data or forwarding planes.  The intention is to

   cover both the signaling and the routing part of that control plane.

Mannie                      Standards Track                     [Page 1]

RFC 3945                   GMPLS Architecture               October 2004

Table of Contents

   1.  Introduction. . . . . . . . . . . . . . . . . . . . . . . . .   4

       1.1.  Acronyms & Abbreviations. . . . . . . . . . . . . . . .   4

       1.2.  Multiple Types of Switching and Forwarding Hierarchies.   5

       1.3.  Extension of the MPLS Control Plane . . . . . . . . . .   7

       1.4.  GMPLS Key Extensions to MPLS-TE . . . . . . . . . . . .  10

   2.  Routing and Addressing Model. . . . . . . . . . . . . . . . .  11

       2.1.  Addressing of PSC and non-PSC layers. . . . . . . . . .  13

       2.2.  GMPLS Scalability Enhancements. . . . . . . . . . . . .  13

       2.3.  TE Extensions to IP Routing Protocols . . . . . . . . .  14

   3.  Unnumbered Links. . . . . . . . . . . . . . . . . . . . . . .  15

       3.1.  Unnumbered Forwarding Adjacencies . . . . . . . . . . .  16

   4.  Link Bundling . . . . . . . . . . . . . . . . . . . . . . . .  16

       4.1.  Restrictions on Bundling. . . . . . . . . . . ....