Re: Speed Mismatch?!?

Thanks Rdymek, I know it smells like a duplex problem.

sh interfaces and eye-balling NIC config....no, it's not. I've got a
good variety of switches, but have been using mostly just the cisco
ones for working through this....many different nics of both kinds and
PC's w/ different Windows versions (2k/xp/2k3) on them to play with.

These Speed results are consistent...from Gi --> Fa, throughput really
sucks.

The collisions are not consistent. Today, I tried things out on a 2801
that's not needed for the moment. No collisions detected today. Not
one. No CRC errors, Just really bad performance between NIC's at same
duplex but different speeds...What I find odd, is that the switch
reports NO packet drops on either side. "sh interface <blah>"

I can't get good debug events going. Packets have to switch by the
processor for the debugger to catch them, right? Anyway....no duplex
mismatch on interface state change.

I have not tried sniffing both sides at the same time. Thanks for
setting me straight on the "store and forward." I'll try
"buffering" too...I have only one router, a 3825, that has both gi
and fa interfaces on it. I'll stick it between two switches and see
what happens. I won't be able to play with it until Sunday, during
off-hours. If this works though....gbit overrunning the 100mbit
host....how would I stop that even if true? It's my worst fear,
here...if this works it confirms that I really do need to put 1000 and
100 hosts on separate L2 fabrics.

....Till Sunday

.

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