There are too many unknown values to say that .01% collision rate or 10%
collision rate
is "unacceptable". What is the distance between the switch and the
workstation, what is the average
packet size, what is the utilization level of the line ..... Cisco may
state that .01% is
correct and that is what you should use on the test, but in the real word
you cannot assign an
arbitrary number and say it is bad, unless it is 100% of course. There have
been tests done
where Ethernet runs fine at 60% collisions, but that was in a controlled
environment. Collisions
by their nature are not bad that is how Ethernet works. One of the easiest
ways to determine
if you have too many collisions is "Is the performance deteriorating". And
you have your network
baselined you can always go against the baseline. Just some thoughts.
Brett Johnson
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