Here is an interesting problem.
I have a client with a Cisco 2924XL switch. Most stations are
directly connected to the switch, however off of one of the switch
ports is an old Bay 10mb/s hub.
The problem is that stations connected to the hub cannot communicate
with stations connected to the switch. Switch stations CAN
communicate with switch stations, and hub stations CAN communicate
with hub stations.
The switch port connected to the hub appears to recognize the hub -
it is up/up and has detected 10mb half duplex. I tried manually
entering these settings with no effect.
It appears to be an arp problem - if I debug arp and then try to ping
a station connected to the hub, arps are sent out, but no replys are
received. This happens whether the switch itself tries to ping a hub
host, or a if a switch station does so. Interestingly enough tho, if
a hub station pings another hub station, the arp shows up on the
switch debug console - it is definitely seeing the traffic!
Any suggestions would be greatly appreciated.
Thanks!
Don Dettmore
CCNP, MCSE, CNE
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