Hi Greg/Authors, I believe this draft still needs work before it is ready for WGLC.
Specifically, it does not cover the use of S-BFD for the monitoring of SR Policies and AFAIK this is the more widely used than the mechanism specified in the draft currently (i.e. than the bootstrap via LSP Ping to setup a "normal" BFD session). I am not saying that the mechanism in the draft cannot be used, but progressing this document toward publication without reflecting the other alternate mechanism that IMO is far more widely implemented and deployed will provide a somewhat misleading picture. My request to the authors is to consider inclusion of text from https://datatracker.ietf.org/doc/draft-ali-spring-bfd-sr-policy/ in this WG document. We can discuss f2f during this week if you agree. I would like us to seek inputs from implementers and operators on which of these two mechanisms they prefer/use. Including this in the document would also be helpful. Thanks, Ketan On Mon, Mar 27, 2023 at 6:04 PM Greg Mirsky <gregimir...@gmail.com> wrote: > Refresh and to update author's contact information. > > Dear All, > the draft is stable and the authors believe it is ready for the WG LC. We > appreciate the WG Chairs' consideration for starting the WG LC. > > Regards, > Greg (on behalf of the authors) > > ---------- Forwarded message --------- > From: <internet-dra...@ietf.org> > Date: Mon, Mar 27, 2023 at 6:00 PM > Subject: New Version Notification for draft-ietf-spring-bfd-06.txt > To: Mach Chen (Guoyi) <mach.c...@huawei.com>, Greg Mirsky < > gregimir...@gmail.com>, Ilya Varlashkin <i...@google.com>, Jeff Tantsura < > jefftant.i...@gmail.com>, Jiang Wenying <jiangweny...@chinamobile.com> > > > > A new version of I-D, draft-ietf-spring-bfd-06.txt > has been successfully submitted by Greg Mirsky and posted to the > IETF repository. > > Name: draft-ietf-spring-bfd > Revision: 06 > Title: Bidirectional Forwarding Detection (BFD) in Segment > Routing Networks Using MPLS Dataplane > Document date: 2023-03-27 > Group: spring > Pages: 14 > URL: > https://www.ietf.org/archive/id/draft-ietf-spring-bfd-06.txt > Status: https://datatracker.ietf.org/doc/draft-ietf-spring-bfd/ > Html: > https://www.ietf.org/archive/id/draft-ietf-spring-bfd-06.html > Htmlized: > https://datatracker.ietf.org/doc/html/draft-ietf-spring-bfd > Diff: > https://author-tools.ietf.org/iddiff?url2=draft-ietf-spring-bfd-06 > > Abstract: > Segment Routing (SR) architecture leverages the paradigm of source > routing. It can be realized in the Multiprotocol Label Switching > (MPLS) network without any change to the data plane. A segment is > encoded as an MPLS label, and an ordered list of segments is encoded > as a stack of labels. Bidirectional Forwarding Detection (BFD) is > expected to monitor any existing path between systems. This document > defines how to use Label Switched Path Ping to bootstrap a BFD > session, control an SR Policy in the reverse direction of the SR-MPLS > tunnel, and applicability of BFD Demand mode in the SR-MPLS domain. > Also, the document describes the use of BFD Echo with BFD Control > packet payload. > > > > > The IETF Secretariat > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring >
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