> > it indicates a late collision, which means that a collision
> occurred after
> > the period during which a collision should occur on a
> correctly functioning
> > net. it does not necessarily indicate high collisions;
> rather it indicates
> > that some device(s) is malfunctioning;
>
> And the important point here is that a "late collision" is a *serious*
> error, which will drastically reduce your network performance.
To amplify Steinar's comment, late collisions are much more detrimental to
performance because the Ethernet MAC flushes the frame retransmit buffer
after the CD delay, which is = minimum frame size/bandwidth. Thus, the
backoff algorithm is not run and the frame is lost, which requires recovery
at layer 4 or higher.
./chris
>
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
>
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