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Re: [Tsvwg] SCTP Timestamps

Sourabh Ladha <ladha@mail.eecis.udel.edu> Mon, 04 August 2003 15:32 UTC

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Date: Mon, 04 Aug 2003 11:22:38 -0400
From: Sourabh Ladha <ladha@mail.eecis.udel.edu>
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To: "Randall R. Stewart (home)" <randall@stewart.chicago.il.us>
Cc: Stephan Baucke <stephan.baucke@ericsson.com>, tsvwg@ietf.org
Subject: Re: [Tsvwg] SCTP Timestamps
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Just a minor comment.

> > 3) Incorrect congestion window growth due to crediting of SACKs to the
> > wrong destination address or unawareness of failover [5]: Can be
> > resolved by timestamps and/or Rhein algorithm (? not sure if these
> > really cover the same problem space; Jana?)
>
> This can be solved with a sender side algorithm.. the KAME stack
> includes such a solution that we developed while working on [5]. I don't
> see that a TS would be needed for this.. they are an alternative
> method.. but I
> don't think are required..


Congestion window overgrowth caused by retransmission ambuiguity will not
be solved by CACC in [5]. I believe that changeover specific
cwnd overgrowth is solved by [5].

-Sourabh


> > [5] Janardhan R. Iyengar, Armando L. Caro Jr., Paul D. Amer, Gerard J.
> > Heinz, Randall R. Stewart, "SCTP Congestion Window Overgrowth During
> > Changeover", SCI 2002
> > http://www.cis.udel.edu/~acaro/papers/2002.sci.iyengar.pdf
> >


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