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Re: Q on the congestion awareness of routing protocols

Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp> Mon, 05 December 2022 04:00 UTC

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Date: Mon, 05 Dec 2022 12:53:44 +0900
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Subject: Re: Q on the congestion awareness of routing protocols
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To: Jon Crowcroft <jon.crowcroft@cl.cam.ac.uk>
Cc: bier@ietf.org, routing-discussion@ietf.org, tsv-area@ietf.org, pim@ietf.org
References: <Y4ovyV074qa3gLSu@faui48e.informatik.uni-erlangen.de> <CAEeTejLa8sdJVU_2OfTo=ZgWRY-kv_7M=xiR-bLyBEXhSDP=Eg@mail.gmail.com> <e2527c9c-c7d1-c6b7-a067-e5ccbdc7e997@necom830.hpcl.titech.ac.jp> <E1p1PaX-009tgu-Hl@mta1.cl.cam.ac.uk> <c86d7ae6-3dad-04be-9c16-0135cc95fe73@necom830.hpcl.titech.ac.jp> <E1p1Rbe-009zgN-1s@mta1.cl.cam.ac.uk> <643e9272-979a-2a0a-d702-2b63cf0de5c4@necom830.hpcl.titech.ac.jp> <CAEeTejJ3yS2fARZNchumfkNyc0cnFfVSW7VdtBaGzhJQ9KmpBg@mail.gmail.com>
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
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Jon Crowcroft wrote:

> I would use multipath quic rather than tcp.

Multipath within a link?

> And for bier CTL, we want
> a fine hoppy protocol like PGMcc

Insisting on multicast instead of TCP mesh is not
very meaningful because, though the number of data
packets sent may be reduced, the number of data
packets received stays same, unless routers merge
some data, which requires the routers have large
(how large depends on application layer time out)
buffer, know how to and not to merge data and have
enough computation power.

						Masataka Ohta

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