Generalized Multi-Protocol Label Switching (GMPLS) Signaling Constraint-based Routed Label Distribution Protocol (CR-LDP) Extensions
RFC 3472
Document | Type | RFC - Proposed Standard (February 2003; No errata) | |
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Authors | Peter Ashwood-Smith , Lou Berger | ||
Last updated | 2013-03-02 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 3472 (Proposed Standard) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Bert Wijnen | ||
IESG note | Published as RFC 3473 | ||
Send notices to | <ronald.p.bonica@mci.com>, <kireeti@juniper.net> |
Network Working Group P. Ashwood-Smith, Editor Request for Comments: 3472 Nortel Networks Category: Standards Track L. Berger, Editor Movaz Networks January 2003 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Constraint-based Routed Label Distribution Protocol (CR-LDP) Extensions 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 (2003). All Rights Reserved. Abstract This document describes extensions to Multi-Protocol Label Switching (MPLS) Constraint-based Routed Label Distribution Protocol (CR-LDP) signaling required to support Generalized MPLS. Generalized MPLS extends the MPLS control plane to encompass time-division (e.g., Synchronous Optical Network and Synchronous Digital Hierarchy, SONET/SDH), wavelength (optical lambdas) and spatial switching (e.g., incoming port or fiber to outgoing port or fiber). This document presents a CR-LDP specific description of the extensions. A generic functional description can be found in separate documents. Table of Contents 1. Introduction .............................................. 2 2. Label Related Formats .................................... 3 2.1 Generalized Label Request ............................... 3 2.2 Generalized Label ....................................... 4 2.3 Waveband Switching ...................................... 5 2.4 Suggested Label ......................................... 6 2.5 Label Set ............................................... 6 3. Bidirectional LSPs ........................................ 8 3.1 Procedures .............................................. 8 4. Notification on Label Error ............................... 9 5. Explicit Label Control .................................. 9 5.1 Procedures .............................................. 9 Ashwood-Smith & Berger Standards Track [Page 1] RFC 3472 GMPLS Signaling - CR-LDP Extensions January 2003 6. Protection TLV ............................................ 10 6.1 Procedures .............................................. 11 7. Administrative Status Information ......................... 11 7.1 Admin Status TLV ........................................ 11 7.2 REQUEST and MAPPING Message Procedures .................. 12 7.3 Notification Message Procedures ......................... 13 8. Control Channel Separation ................................ 14 8.1 Interface Identification ................................ 14 8.2 Errored Interface Identification ........................ 15 9. Fault Handling ......................................... 17 10 Acknowledgments ........................................... 17 11. Security Considerations ................................... 17 12. IANA Considerations ....................................... 17 13. Intellectual Property Considerations ...................... 18 14. References ................................................ 18 14.1 Normative References ................................... 18 14.2 Informative References ................................. 19 15. Contributors .............................................. 19 16. Editors' Addresses ........................................ 22 17. Full Copyright Statement ................................... 23 1. Introduction Generalized MPLS extends MPLS from supporting packet (PSC) interfaces and switching to include support of three new classes of interfaces and switching: Time-Division Multiplex (TDM), Lambda Switch (LSC) and Fiber-Switch (FSC). A functional description of the extensions to MPLS signaling needed to support the new classes of interfaces and switching is provided in [RFC3471]. This document presents CR-LDP specific formats and mechanisms needed to support all four classes of interfaces. RSVP-TE extensions can be found in [RFC3473]. [RFC3471] should be viewed as a companion document to this document. The format of this document parallels [RFC3471]. It should be noted that the RSVP-TE specific version of Generalized MPLS includes RSVP specific support for rapid failure notification, see Section 4 [RFC3473]. For CR-LDP there is not currently a similar mechanism.Show full document text