Hi Les,
do you see anything that requires further specification in addition to RFC
5883?

Regards
Greg

On Mon, Jan 10, 2022, 17:14 Les Ginsberg (ginsberg) <ginsberg=
40cisco....@dmarc.ietf.org> wrote:

> Tony –
>
>
>
> I could be more specific regarding my opinion about various alternatives
> that have been mentioned (BFD, OAM, BGP, pub-sub) – but it doesn’t make
> sense to me to comment on proposals which have not actually been defined.
>
> If someone (not necessarily you) wants to write up any of these proposals
> then we (the WG/Routing Area) could have a meaningful discussion about such
> alternatives.
>
>
>
> In the meantime, we started with the IGPs because:
>
>
>
> a)IGPs have the raw reachability info – they don’t have to get it from
> some other entity
>
> b)IGPs have the reliable flooding mechanism
>
>
>
> Given that we want to address a real deployment issue in a timely manner,
> we want to move forward.
>
>
>
> We – meaning the WG/IETF – are tasked with defining practical solutions to
> real problems. It’s fine to object to a proposal – but that doesn’t get us
> to a solution.
>
> I am not saying that you specifically are responsible for defining an
> alternate solution – but if “we” are to progress then we either need to
> accept an IGP solution or define an alternative.
>
>
>
> Now, if you are saying the problem doesn’t need to be solved – then we
> just disagree.
>
>
>
>    Les
>
>
>
>
>
> *From:* Tony Li <tony1ath...@gmail.com> *On Behalf Of *Tony Li
> *Sent:* Monday, January 10, 2022 4:43 PM
> *To:* Les Ginsberg (ginsberg) <ginsb...@cisco.com>
> *Cc:* Christian Hopps <cho...@chopps.org>; Peter Psenak (ppsenak) <
> ppse...@cisco.com>; Robert Raszuk <rob...@raszuk.net>; Shraddha Hegde <
> shrad...@juniper.net>; Aijun Wang <wangai...@tsinghua.org.cn>; Hannes
> Gredler <han...@gredler.at>; lsr <lsr@ietf.org>
> *Subject:* Re: [Lsr] BGP vs PUA/PULSE
>
>
>
>
>
> Les,
>
>
>
>
>
> And if customers could do what he suggested then they would not have an
> issue.
>
>
>
> But there are deployments where what he suggested is not possible –
> largely I think because the set of “prefixes of interest” is in itself
> large.
>
>
>
>
>
> Well, the alleged customers have not come forward to explain the
> situation. I would welcome more specifics, even under NDA. It’s hard to
> relate to allegations of scale without specifics. If the area has that many
> PEs in it, then is really too large to be a single area in the first place?
>
>
>
>
>
>  So while not all customers have an issue, some customers do and we are
> trying to find a way to address those deployments.
>
>
>
> As far as the alternative proposals, I will comment on them if/when there
> is something visible – but I think they will all suffer from scale issues.
>
>
>
>
>
> They have been proposed here and have not been refuted.
>
>
>
> Everything always suffers from scale issues, so that’s not exactly
> constructive.
>
>
>
> I would be more than happy to write up the pub-sub proposal, but … it’s
> not my customer and it’s not in my charter to contribute to your revenue. :)
>
>
>
> Tony
>
>
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
>
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