Sure Jie. We will add post adoption.

Thanks,
Ketan


On Thu, Mar 21, 2024 at 5:16 AM Dongjie (Jimmy) <[email protected]> wrote:

> Hi Ketan,
>
>
>
> Thanks for sharing the use cases of this new flag. It would be helpful if
> some brief description could be added to the document.
>
>
>
> Best regards,
>
> Jie
>
>
>
> *From:* Ketan Talaulikar <[email protected]>
> *Sent:* Thursday, March 21, 2024 1:18 AM
> *To:* Acee Lindem <[email protected]>
> *Cc:* Dongjie (Jimmy) <[email protected]>; lsr <[email protected]>;
> [email protected]
> *Subject:* Re: [Lsr] Working Group Adoption Poll for "Updates to Anycast
> Property advertisement for OSPFv2" - draft-chen-lsr-anycast-flag-06
>
>
>
> 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.
>
>
>
> 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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