BFD Path Consistency over SR
draft-lin-bfd-path-consistency-over-sr-01
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
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|---|---|---|---|
| Authors | Changwang Lin , Weiqiang Cheng , Jiang Wenying | ||
| Last updated | 2023-11-06 (Latest revision 2023-04-26) | ||
| Replaces | draft-lin-sbfd-path-consistency-over-srv6 | ||
| RFC stream | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
Bidirectional Forwarding Detection (BFD) can be used to monitor paths between nodes. U-BFD defined in [I-D.ietf-bfd-unaffiliated-echo] can effectively reduce the device equipment. Seamless BFD (S-BFD) provides a simplified mechanism which is suitable for monitoring of paths that are setup dynamically and on a large scale network. In SR network, BFD can also be used to monitor SR paths. When a headend use BFD to monitor the segment list/CPath of SR Policy, the forward path of control packet is indicated by segment list, the reverse path of response control packet is via the shortest path from the reflector back to the initiator (headend) as determined by routing. The forward path and reverse path of control packet are likely inconsistent going through different intermediate nodes or links. This document describes a method to keep the forward path and reverse path consistent when using S-BFD or U-BFD to detect SR Policy
Authors
Changwang Lin
Weiqiang Cheng
Jiang Wenying
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)