Sounds rather familar. These are suggestions only. I would reset all counters on your switches. Telnet in to do this. Collect port Statistics the next day. Look for usual errors (Collisions ,Late Collisions Frame errors etc. This will indicate if the...
Yes GBICs do run full duplex. I am running a 1 gig fibre link between buildings (Multimode Fibre). This provides the link to the other 3548. (48 port switches with 2 gbics). So far no problems. I check the stats on the switches every week so far no p...