Recovery (Protection and Restoration) Terminology for Generalized Multi-Protocol Label Switching (GMPLS)
RFC 4427
Document | Type | RFC - Informational (March 2006; Errata) | |
---|---|---|---|
Authors | Dimitri Papadimitriou , Eric Mannie | ||
Last updated | 2020-01-21 | ||
Stream | Internet 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 4427 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Alex Zinin | ||
Send notices to | kireeti@juniper.net, adrian@olddog.co.uk |
Network Working Group E. Mannie, Ed. Request for Comments: 4427 Perceval Category: Informational D. Papadimitriou, Ed. Alcatel March 2006 Recovery (Protection and Restoration) Terminology for Generalized Multi-Protocol Label Switching (GMPLS) Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2006). Abstract This document defines a common terminology for Generalized Multi- Protocol Label Switching (GMPLS)-based recovery mechanisms (i.e., protection and restoration). The terminology is independent of the underlying transport technologies covered by GMPLS. Mannie & Papadimitriou Informational [Page 1] RFC 4427 GMPLS Recovery Terminology March 2006 Table of Contents 1. Introduction ....................................................3 2. Contributors ....................................................4 3. Conventions Used in this Document ...............................5 4. Recovery Terminology Common to Protection and Restoration .......5 4.1. Working and Recovery LSP/Span ..............................6 4.2. Traffic Types ..............................................6 4.3. LSP/Span Protection and Restoration ........................6 4.4. Recovery Scope .............................................7 4.5. Recovery Domain ............................................8 4.6. Recovery Types .............................................8 4.7. Bridge Types ..............................................10 4.8. Selector Types ............................................10 4.9. Recovery GMPLS Nodes ......................................11 4.10. Switch-over Mechanism ....................................11 4.11. Reversion operations .....................................11 4.12. Failure Reporting ........................................12 4.13. External commands ........................................12 4.14. Unidirectional versus Bi-Directional Recovery Switching ..13 4.15. Full versus Partial Span Recovery Switching ..............14 4.16. Recovery Schemes Related Time and Durations ..............14 4.17. Impairment ...............................................15 4.18. Recovery Ratio ...........................................15 4.19. Hitless Protection Switch-over ...........................15 4.20. Network Survivability ....................................15 4.21. Survivable Network .......................................16 4.22. Escalation ...............................................16 5. Recovery Phases ................................................16 5.1. Entities Involved During Recovery .........................17 6. Protection Schemes .............................................17 6.1. 1+1 Protection ............................................18 6.2. 1:N (N >= 1) Protection ...................................18 6.3. M:N (M, N > 1, N >= M) Protection .........................18 6.4. Notes on Protection Schemes ...............................19 7. Restoration Schemes ............................................19 7.1. Pre-Planned LSP Restoration ...............................19 7.1.1. Shared-Mesh Restoration ............................19 7.2. LSP Restoration ...........................................20 7.2.1. Hard LSP Restoration ...............................20 7.2.2. Soft LSP Restoration ...............................20 8. Security Considerations ........................................20 9. References .....................................................20 9.1. Normative References ......................................20 9.2. Informative References ....................................20 10. Acknowledgements ..............................................21 Mannie & Papadimitriou Informational [Page 2] RFC 4427 GMPLS Recovery Terminology March 2006 1. Introduction This document defines a common terminology for Generalized Multi- Protocol Label Switching (GMPLS)-based recovery mechanisms (i.e., protection and restoration). The terminology proposed in this document is independent of the underlying transport technologies and borrows from the G.808.1 ITU-T Recommendation [G.808.1] and from the G.841 ITU-T Recommendation [G.841]. The restoration terminology and concepts have been gatheredShow full document text