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Re: [ns] Reno and New Reno



On Fri, Sep 28, 2001 at 01:55:01PM +0200, Beatriz Hargrave da Silva wrote:
> Hi !
> 
> ....
> 
> Another question:
> 
> Does anybody know what is the real difference  between TCP Reno and TCP
> New Reno ??
> 
> I read that in TCP NewReno a "Partial ACK do not take TCP out of Fast
> Recovery. TCP remains in Fast Recovery until all of the data outstanding
> when Fast Recovery was initiated has been acknowledged". But what I
> notice from my simulations is that TCP Reno already does that. Can
> somebody help me to understand that ?

You will only see the difference if more than one segments are dropped 
from a single flight. Reno exits FR when the first drop is recovered
while NewReno exits when all drops are recovered.

Dimitris.

> 
> Thanks in advance.
> 
> Beatriz

-- 
Dimitris Velenis                              <[email protected]>
Network Management & Optimal Design Lab
National Technical University of Athens