Sure, Acee. We can take that on :-) I hope it is ok that this is done post adoption?
Thanks, Ketan On Wed, Mar 20, 2024 at 9:35 PM Acee Lindem <[email protected]> wrote: > > > > On Mar 20, 2024, at 11:17 AM, Ketan Talaulikar <[email protected]> > wrote: > > > > Hi Acee/Jie, > > > > The most common users of the anycast property of a prefix are external > controllers/PCE that perform path computation exercises. As an example, > knowing the anycast prefix of a pair of redundant ABRs allows that anycast > prefix SID to be in a SRTE path across the ABRs with protection against one > of those ABR nodes going down or getting disconnected. There are other use > cases. An example of local use on the router by IGPs is to avoid picking > anycast SIDs in the repair segment-list prepared for TI-LFA protection - > this is because it could cause an undesirable path that may not be aligned > during the FRR window and/or post-convergence. > > > > That said, since ISIS (RFC9352) and OSPFv3 (RFC9513) didn't have the > burden of this justification of an use-case, I hope the same burden would > not fall on this OSPFv2 document simply because it only has this one > specific extension. > > But they also weren't added in a draft specifically devoted to the Anycast > flag. It would be good to list the examples above as potential use cases. > > > Thanks, > Acee > > > > > > > Thanks, > > Ketan > > > > > > On Wed, Mar 20, 2024 at 8:16 PM Acee Lindem <[email protected]> wrote: > > Hi Jie, > > > > I asked this when the flag was added to IS-IS and then to OSPFv3. I > agree it would be good to know why knowing a prefix is an Anycast address > is "useful" when the whole point is that you use the closest one (or some > other criteria). > > > > Thanks, > > Acee > > > > > On Mar 20, 2024, at 9:09 AM, Dongjie (Jimmy) <[email protected]> > wrote: > > > > > > Hi authors, > > > > > > I just read this document. Maybe I didn't follow the previous > discussion, but it seems in the current version it does not describe how > this newly defined flag would be used by the receiving IGP nodes? > > > > > > Best regards, > > > Jie > > > > > > -----Original Message----- > > > From: Lsr <[email protected]> On Behalf Of Acee Lindem > > > Sent: Wednesday, March 20, 2024 4:43 AM > > > To: lsr <[email protected]> > > > Cc: [email protected] > > > Subject: [Lsr] Working Group Adoption Poll for "Updates to Anycast > Property advertisement for OSPFv2" - draft-chen-lsr-anycast-flag-06 > > > > > > > > > This starts the Working Group adoption call for > draft-chen-lsr-anycast-flag. This is a simple OSPFv2 maintenance draft > adding an Anycast flag for IPv4 prefixes to align with IS-IS and OSPFv3. > > > > > > Please send your support or objection to this list before April 6th, > 2024. > > > > > > Thanks, > > > Acee > > > > > > > > > _______________________________________________ > > > Lsr mailing list > > > [email protected] > > > https://www.ietf.org/mailman/listinfo/lsr > > > >
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