Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description
RFC 3471
Document | Type | RFC - Proposed Standard (February 2003; Errata) | |
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Author | Lou Berger | ||
Last updated | 2020-01-21 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 3471 (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 L. Berger, Editor Request for Comments: 3471 Movaz Networks Category: Standards Track January 2003 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description 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) 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 functional description of the extensions. Protocol specific formats and mechanisms, and technology specific details are specified in separate documents. Table of Contents 1. Introduction ............................................... 2 2. Overview .................................................. 3 3. Label Related Formats ..................................... 6 3.1 Generalized Label Request ............................... 6 3.2 Generalized Label ....................................... 11 3.3 Waveband Switching ...................................... 12 3.4 Suggested Label ......................................... 13 3.5 Label Set ............................................... 14 4. Bidirectional LSPs ......................................... 16 4.1 Required Information .................................... 17 4.2 Contention Resolution ................................... 17 5. Notification on Label Error ................................ 20 6. Explicit Label Control ..................................... 20 6.1 Required Information .................................... 21 Berger Standards Track [Page 1] RFC 3471 GMPLS Signaling Functional Description 7. Protection Information ..................................... 21 7.1 Required Information .................................... 22 8. Administrative Status Information .......................... 23 8.1 Required Information .................................... 24 9. Control Channel Separation ................................. 25 9.1 Interface Identification ................................ 25 9.2 Fault Handling .......................................... 27 10. Acknowledgments ............................................ 27 11. Security Considerations .................................... 28 12. IANA Considerations ........................................ 28 13. Intellectual Property Considerations ....................... 29 14. References ................................................. 29 14.1 Normative References ................................... 29 14.2 Informative References ................................. 30 15. Contributors ............................................... 31 16. Editor's Address ........................................... 33 17. Full Copyright Statement ................................... 34 1. Introduction The Multiprotocol Label Switching (MPLS) architecture [RFC3031] has been defined to support the forwarding of data based on a label. In this architecture, Label Switching Routers (LSRs) were assumed to have a forwarding plane that is capable of (a) recognizing either packet or cell boundaries, and (b) being able to process either packet headers (for LSRs capable of recognizing packet boundaries) or cell headers (for LSRs capable of recognizing cell boundaries). The original architecture has recently been extended to include LSRs whose forwarding plane recognizes neither packet, nor cell boundaries, and therefore, can't forward data based on the information carried in either packet or cell headers. Specifically, such LSRs include devices where the forwarding decision is based on time slots, wavelengths, or physical ports. Given the above, LSRs, or more precisely interfaces on LSRs, can be subdivided into the following classes: 1. Interfaces that recognize packet/cell boundaries and can forward data based on the content of the packet/cell header. Examples include interfaces on routers that forward data based on theShow full document text