On Tue, Jun 27, 2023 at 8:33 AM Y. Richard Yang <y...@cs.yale.edu> wrote:
> Hi Luis, > > Thank you so much for starting this thread on Topic B. I feel that this is > a crucial topic for the WG to investigate. Please see below. > > On Mon, Jun 26, 2023 at 5:18 PM LUIS MIGUEL CONTRERAS MURILLO < > luismiguel.contrerasmuri...@telefonica.com> wrote: > >> Hi all, >> >> Related to Topic B on maintenance of ALTO, as a way of summary of what >> has been discussed during the last weeks, we could have two major >> sub-topics: >> >> 1/ extension of ALTO to consider operational simplicity. Here fits the >> proposal of introducing BGP communities in ALTO. The rationale is that >> operators use BGP communities quite often as mechanism for applying >> policies and determining certain behaviors on the IP addresses grouped in >> the form of communities. This seems quite useful as well at the time of >> exposing associated information (metrics, topology, etc) as enabled by >> ALTO. An initial draft can be found here: >> https://github.com/luismcontreras/alto-bgp-communities >> >> The plan is to generate version -01 for IETF 117. >> > > I like this subtopic! I have adopted a view that ALTO should be divided > into 2 layers: a concept/abstraction layer and a transport layer built on > top of the concept layer. I feel that there is great work validating the > concept layer, for example, the concepts of distance, ranking, say in the > flow director, padis work. For transport later, the WG can be flexible and > provide multiple transport mechanisms. BGP communities are an excellent, > well defined framework to serve as a transport (of both existing alto > concepts/abstractions) and also existing networking abstractions). Good > direction. > To be specific, I think it will be a worthwhile effort to look into BGP-ALTO; that is, how to use BGP to encode, transport and update ALTO basic information. It can be considered a BGP vertical slice, with BGP-LS as the lower lower layer. Make sense? I will add some more details to the doc. Talk to many of you soon. Richard > >> >
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