Re: Packet size s on CCID3

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On Oct 4, 2006, at 1:20 PM, Arjuna Sathiaseelan wrote:

That sounds perfect to me :). Also I hope Sally would note this in her
draft RFC3448-bis too. Thanks Eddie was considering my suggestions :).

- Will do.

Regards
Arjuna

On 10/4/06, Eddie Kohler <kohler@xxxxxxxxxxx> wrote:
...
RFC 4342 has this to say about initial sending rates.

   Translating this to the packet-based congestion control of CCID 3,
the initial CCID 3 sending rate is allowed to be at least two packets
   per RTT, and at most four packets per RTT, depending on the packet
   size.  The initial rate is only allowed to be three or four packets
   per RTT when, in terms of segment size, that translates to at most
   4380 bytes per RTT.
...
Here's how to alter the paragraph above to clarify this point.

Therefore, in contrast to [RFC3448], the initial CCID 3 sending rate
   is allowed to be at least two packets per RTT, and at most four
   packets per RTT, depending on the packet size.  The initial rate is
   only allowed to be three or four packets per RTT when, in terms of
   segment size, that translates to at most 4380 bytes per RTT.  This
   might be implemented, for example, by setting the initial sending
   rate to min(4*s, max(2*s, 4380 bytes)), where "s" as usual is the
   packet size in bytes.

Will send an errata in once all this has settled down, clearly more
specificity would help here...

- Sally
http://www.icir.org/floyd/



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