Re: [tcpm] Fwd: New Version Notification for draft-jarvinen-tcpm-sack-recovery-entry-01

Fernando Gont <fernando@gont.com.ar> Thu, 20 August 2009 08:59 UTC

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Date: Thu, 20 Aug 2009 05:59:02 -0300
From: Fernando Gont <fernando@gont.com.ar>
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Cc: tcpm@ietf.org, Markku Kojo <kojo@cs.Helsinki.FI>
Subject: Re: [tcpm] Fwd: New Version Notification for draft-jarvinen-tcpm-sack-recovery-entry-01
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Ilpo Järvinen wrote:

> We've just uploaded 01 version which is effectively the same version as
> the unofficial 01a that was used as the basis of the presentation in
> the Stockholm meeting. Only the following placeholders for TBD items
> were added to -01 version:
> - A note on Window Updates, yet another case where the improved
>   algorithm has a benefit (thanks to corridor talk with Anna Brunström)
> - Clarified the dupack counting rule for the case where the
>   duplicate ACKs don't come "in a row"

I'm planning to review this document anytime soon. In the man time, have
you had a look at Section 9.2 of
http://www.cpni.gov.uk/Docs/tn-03-09-security-assessment-TCP.pdf ?

IIRC, that of rquiring dupacks to contain new sack information came up
while discussing Section 9.2 with Mark Allman a while ago.

Thanks!

Kind regards,
-- 
Fernando Gont
e-mail: fernando@gont.com.ar || fgont@acm.org
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1