Updates to the Resource Reservation Protocol for Fast Reroute of Traffic Engineering GMPLS Label Switched Paths (LSPs)
RFC 8271
Document | Type |
RFC - Proposed Standard
(October 2017; No errata)
Updates RFC 4090
|
|
---|---|---|---|
Authors | Mike Taillon , Tarek Saad , Rakesh Gandhi , Zafar Ali , Manav Bhatia | ||
Last updated | 2017-10-31 | ||
Replaces | draft-tsaad-ccamp-rsvpte-bidir-lsp-fastreroute | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Vishnu Beeram | ||
Shepherd write-up | Show (last changed 2017-03-24) | ||
IESG | IESG state | RFC 8271 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) M. Taillon Request for Comments: 8271 T. Saad, Ed. Updates: 4090 R. Gandhi, Ed. Category: Standards Track Z. Ali ISSN: 2070-1721 Cisco Systems, Inc. M. Bhatia Nokia October 2017 Updates to the Resource Reservation Protocol for Fast Reroute of Traffic Engineering GMPLS Label Switched Paths (LSPs) Abstract This document updates the Resource Reservation Protocol - Traffic Engineering (RSVP-TE) Fast Reroute (FRR) procedures defined in RFC 4090 to support Packet Switch Capable (PSC) Generalized Multiprotocol Label Switching (GMPLS) Label Switched Paths (LSPs). These updates allow the coordination of a bidirectional bypass tunnel assignment protecting a common facility in both forward and reverse directions of a co-routed bidirectional LSP. In addition, these updates enable the redirection of bidirectional traffic onto bypass tunnels that ensure the co-routing of data paths in the forward and reverse directions after FRR and avoid RSVP soft-state timeout in the control plane. Status of This Memo This is an Internet Standards Track document. 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). Further information on Internet Standards is available in 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 https://www.rfc-editor.org/info/rfc8271. Taillon, et al. Standards Track [Page 1] RFC 8271 FRR for TE GMPLS LSPs October 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 (https://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. Taillon, et al. Standards Track [Page 2] RFC 8271 FRR for TE GMPLS LSPs October 2017 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Conventions Used in This Document . . . . . . . . . . . . . . 5 2.1. Key Word Definitions . . . . . . . . . . . . . . . . . . 5 2.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 5 2.3. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 6 3. Fast Reroute for Unidirectional GMPLS LSPs . . . . . . . . . 6 4. Bypass Tunnel Assignment for Bidirectional GMPLS LSPs . . . . 7 4.1. Bidirectional GMPLS Bypass Tunnel Direction . . . . . . . 7 4.2. Merge Point Labels . . . . . . . . . . . . . . . . . . . 7 4.3. Merge Point Addresses . . . . . . . . . . . . . . . . . . 7 4.4. RRO IPv4/IPv6 Subobject Flags . . . . . . . . . . . . . . 8 4.5. Bidirectional Bypass Tunnel Assignment Coordination . . . 8 4.5.1. Bidirectional Bypass Tunnel Assignment Signaling Procedure . . . . . . . . . . . . . . . . . . . . . . 8 4.5.2. One-to-One Bidirectional Bypass Tunnel Assignment . . 10 4.5.3. Multiple Bidirectional Bypass Tunnel Assignments . . 10 5. Fast Reroute for Bidirectional GMPLS LSPs with In-Band Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.1. Link Protection for Bidirectional GMPLS LSPs . . . . . . 12 5.1.1. Behavior after Link Failure . . . . . . . . . . . . . 13 5.1.2. Revertive Behavior after Fast Reroute . . . . . . . . 13 5.2. Node Protection for Bidirectional GMPLS LSPs . . . . . . 13 5.2.1. Behavior after Link Failure . . . . . . . . . . . . . 14 5.2.2. Behavior after Link Failure to Restore Co-routing . . 14 5.2.3. Revertive Behavior after Fast Reroute . . . . . . . . 16 5.2.4. Behavior after Node Failure . . . . . . . . . . . . . 16 5.3. Unidirectional Link Failures . . . . . . . . . . . . . . 16Show full document text