[conex] "Congestion" vs. "Congestion Volume"
John Leslie <john@jlc.net> Tue, 25 October 2011 15:42 UTC
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Date: Tue, 25 Oct 2011 11:42:15 -0400
From: John Leslie <john@jlc.net>
To: ConEx IETF list <conex@ietf.org>
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Subject: [conex] "Congestion" vs. "Congestion Volume"
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Alissa Cooper <acooper@cdt.org> wrote: > > http://www.ietf.org/id/draft-ietf-conex-concepts-uses-03.txt This I-D defines "Congestion" and "Congestion Volume". While the definitions are mostly right IMHO, there are inevitable problems as the terms are used later in the document. Inevitably we must use "level of congestion" in a few places. Which does it refer to? I'd argue that it's not always one or the other. In some places it's clearly bytes-on-the-wire dropped; in others it's clearly percentage of packets dropped. I'd recommend that we clarify that "level of congestion" may have different meanings in different places along the path. Also, we use "quotas" in a few places. The implementation of quotas, IMHO, is unlikely to be the same everywhere. Some quotas will count packets regardless of size; others may count bytes, but are likely to count bytes differently: I doubt we can expect the count to be bytes-on-the-wire consistently. In IPv6, bytes-on-the-wire can differ considerably from bytes of payload, and I would expect some users to argue that they shouldn't be charged for anything beyond payload. As an ISP, I know "winning" such arguments is Pyrrhic. (This much should suffice for starting the discussion. ;^) -- John Leslie <john@jlc.net>
- [conex] I-D Action: draft-ietf-conex-concepts-use… internet-drafts
- Re: [conex] I-D Action: draft-ietf-conex-concepts… Alissa Cooper
- Re: [conex] I-D Action: draft-ietf-conex-concepts… John Leslie
- [conex] "Congestion" vs. "Congestion Volume" John Leslie
- Re: [conex] I-D Action: draft-ietf-conex-concepts… Alissa Cooper
- Re: [conex] "Congestion" vs. "Congestion Volume" Alissa Cooper