SR Policy Extensions for Path Segment and Bidirectional Path
draft-ietf-idr-sr-policy-path-segment-14
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
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|---|---|---|---|
| Authors | Cheng Li , Zhenbin Li , Yuanyang Yin , Weiqiang Cheng , Ketan Talaulikar | ||
| Last updated | 2026-03-16 (Latest revision 2025-09-11) | ||
| Replaces | draft-li-idr-sr-policy-path-segment | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Formats | |||
| Additional resources | Mailing list discussion | ||
| Stream | WG state | WG Document | |
| Document shepherd | Susan Hares | ||
| Shepherd write-up | Show Last changed 2024-06-07 | ||
| IESG | IESG state | Expired | |
| Consensus boilerplate | Unknown | ||
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | shares@ndzh.com |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
A Segment Routing(SR) policy identifies a set of candidate SR paths Each SR path is passed in BGP as the SR Policy SAFI NLRI accompanied with the Tunnel Encapsulation attribute (Tunnel-encaps). Each SR Path (tunnel) uses a set of TLVs in the Tunnel-encaps attribute to describe the characteristics of the SR Policy tunnel. One of the TLVs that describes the tunnel is the Segment list TLV which provides a list of segments contained in the tunnel. This document specifies a new Path Segment Sub-TLV to associate a Path Segment ID to the SR Segment List. The Path Segment ID can be used for performance measurement, path correlation, and end-2-end path protection. This Path Segment identifier can be also be used to correlate two unidirectional SR paths into a bidirectional SR path. Bidirection SR path may be required in some scenarios such as mobile backhaul transport network.
Authors
Cheng Li
Zhenbin Li
Yuanyang Yin
Weiqiang Cheng
Ketan Talaulikar
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)