I have a 2960G and a 3548XL. They are linked via a giga module in port Gi 0/2 in the 3548XL that runs into port Gi 0/6 into the 2960G. Since this morning the link has been going down, which is a problem, but whats more of a problem is that it takes down all the other ports on the 2960G for a while, ( they turn orange and then come back up Green when port 0/6 is back). My question is what could be causing all ports to go down?
thanks for your help in advance.
Seems like all your ports are participating in Spanning-tree calculations
when there is a link state change. That is the reason you will see all ports
going orange and becoming green again. This is normal for trunk ports but
regular access ports (connected to workstations) need not participate in the
Spanning-tree. Please configure "spanning-tree portfast" under all
Interface range fa 0/1-24
Hope this helps.
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