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Routing Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS)
RFC 4202

Document type: RFC - Proposed Standard (October 2005)
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 4202 (Proposed Standard)
Responsible AD: Bert Wijnen
Send notices to: <ronald.p.bonica@mci.com>, <kireeti@juniper.net>, <adrian@olddog.co.uk>

Network Working Group                                   K. Kompella, Ed.
Request for Comments: 4202                              Y. Rekhter,  Ed.
Category: Standards Track                               Juniper Networks
                                                            October 2005

                   Routing 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 routing extensions in support of carrying
   link state information for Generalized Multi-Protocol Label Switching
   (GMPLS).  This document enhances the routing extensions required to
   support MPLS Traffic Engineering (TE).

Kompella & Rekhter          Standards Track                     [Page 1]
RFC 4202              Routing Extensions for GMPLS          October 2005

Table of Contents

   1.  Introduction. . . . . . . . . . . . . . . . . . . . . . . . .   3
       1.1.  Requirements for Layer-Specific TE Attributes . . . . .   4
       1.2.  Excluding Data Traffic from Control Channels. . . . . .   6
   2.  GMPLS Routing Enhancements. . . . . . . . . . . . . . . . . .   7
       2.1.  Support for Unnumbered Links. . . . . . . . . . . . . .   7
       2.2.  Link Protection Type. . . . . . . . . . . . . . . . . .   7
       2.3.  Shared Risk Link Group Information. . . . . . . . . . .   9
       2.4.  Interface Switching Capability Descriptor . . . . . . .   9
             2.4.1.  Layer-2 Switch Capable. . . . . . . . . . . . .  11
             2.4.2.  Packet-Switch Capable . . . . . . . . . . . . .  11
             2.4.3.  Time-Division Multiplex Capable . . . . . . . .  12
             2.4.4.  Lambda-Switch Capable . . . . . . . . . . . . .  13
             2.4.5.  Fiber-Switch Capable. . . . . . . . . . . . . .  13
             2.4.6.  Multiple Switching Capabilities per Interface .  13
             2.4.7.  Interface Switching Capabilities and Labels . .  14
             2.4.8.  Other Issues. . . . . . . . . . . . . . . . . .  14
       2.5.  Bandwidth Encoding. . . . . . . . . . . . . . . . . . .  15
   3.  Examples of Interface Switching Capability Descriptor . . . .  15
       3.1.  STM-16 POS Interface on a LSR . . . . . . . . . . . . .  15
       3.2.  GigE Packet Interface on a LSR. . . . . . . . . . . . .  15
       3.3.  STM-64 SDH Interface on a Digital Cross Connect with
             Standard SDH. . . . . . . . . . . . . . . . . . . . . .  15
       3.4.  STM-64 SDH Interface on a Digital Cross Connect with
             Two Types of SDH Multiplexing Hierarchy Supported . . .  16
       3.5.  Interface on an Opaque OXC (SDH Framed) with Support
             for One Lambda per Port/Interface . . . . . . . . . . .  16
       3.6.  Interface on a Transparent OXC (PXC) with External
             DWDM that understands SDH framing . . . . . . . . . . .  17
       3.7.  Interface on a Transparent OXC (PXC) with External
             DWDM That Is Transparent to Bit-Rate and Framing. . . .  17
       3.8.  Interface on a PXC with No External DWDM. . . . . . . .  18
       3.9.  Interface on a OXC with Internal DWDM That Understands
             SDH Framing . . . . . . . . . . . . . . . . . . . . . .  18
       3.10. Interface on a OXC with Internal DWDM That Is
             Transparent to Bit-Rate and Framing . . . . . . . . . .  19
   4.  Example of Interfaces That Support Multiple Switching
       Capabilities. . . . . . . . . . . . . . . . . . . . . . . . .  20
       4.1.  Interface on a PXC+TDM Device with External DWDM. . . .  20
       4.2.  Interface on an Opaque OXC+TDM Device with External
             DWDM. . . . . . . . . . . . . . . . . . . . . . . . . .  21
       4.3.  Interface on a PXC+LSR Device with External DWDM. . . .  21
       4.4.  Interface on a TDM+LSR Device . . . . . . . . . . . . .  21
   5.  Acknowledgements. . . . . . . . . . . . . . . . . . . . . . .  22
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  22

Kompella & Rekhter          Standards Track                     [Page 2]
RFC 4202              Routing Extensions for GMPLS          October 2005

   7.  References. . . . . . . . . . . . . . . . . . . . . . . . . .  23
       7.1.  Normative References. . . . . . . . . . . . . . . . . .  23
       7.2.  Informative References. . . . . . . . . . . . . . . . .  24

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