RSVP-TE Signaling Procedure for End-to-End GMPLS Restoration and Resource Sharing
RFC 8131
Document | Type | RFC - Informational (March 2017; No errata) | |
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Authors | Xian Zhang , Haomian Zheng , Rakesh Gandhi , Zafar Ali , Pawel Brzozowski | ||
Last updated | 2018-12-20 | ||
Replaces | draft-ietf-ccamp-gmpls-resource-sharing-proc | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Vishnu Beeram | ||
Shepherd write-up | Show (last changed 2016-10-27) | ||
IESG | IESG state | RFC 8131 (Informational) | |
Action Holders |
(None)
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Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | (None) | ||
IANA | IANA review state | IANA OK - No Actions Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) X. Zhang Request for Comments: 8131 H. Zheng, Ed. Category: Informational Huawei Technologies ISSN: 2070-1721 R. Gandhi, Ed. Z. Ali Cisco Systems, Inc. P. Brzozowski ADVA Optical March 2017 RSVP-TE Signaling Procedure for End-to-End GMPLS Restoration and Resource Sharing Abstract In non-packet transport networks, there are requirements where the Generalized Multiprotocol Label Switching (GMPLS) end-to-end recovery scheme needs to employ a restoration Label Switched Path (LSP) while keeping resources for the working and/or protecting LSPs reserved in the network after the failure occurs. This document reviews how the LSP association is to be provided using Resource Reservation Protocol - Traffic Engineering (RSVP-TE) signaling in the context of a GMPLS end-to-end recovery scheme when using restoration LSP where failed LSP is not torn down. In addition, this document discusses resource sharing-based setup and teardown of LSPs as well as LSP reversion procedures. No new signaling extensions are defined by this document, and it is strictly informative in nature. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc8131. Zhang, et al. Informational [Page 1] RFC 8131 GMPLS Restoration and Resource Sharing March 2017 Copyright Notice Copyright (c) 2017 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................3 2. Conventions Used in This Document ...............................4 2.1. Terminology ................................................4 2.2. Abbreviations ..............................................4 3. Overview ........................................................4 3.1. Examples of Restoration Schemes ............................5 3.1.1. 1+R Restoration .....................................5 3.1.2. 1+1+R Restoration ...................................6 3.1.2.1. 1+1+R Restoration - Variants ...............7 3.2. Resource Sharing by Restoration LSP ........................7 4. RSVP-TE Signaling Procedure .....................................8 4.1. Restoration LSP Association ................................8 4.2. Resource Sharing-Based Restoration LSP Setup ...............8 4.3. LSP Reversion .............................................10 4.3.1. Make-While-Break Reversion .........................10 4.3.2. Make-Before-Break Reversion ........................11 5. Security Considerations ........................................12 6. IANA Considerations ............................................13 7. References .....................................................13 7.1. Normative References ......................................13 7.2. Informative References ....................................13 Acknowledgements .................................................14 Contributors ......................................................14 Authors' Addresses ................................................15 Zhang, et al. Informational [Page 2]Show full document text