07-22-2010 03:20 AM - edited 03-06-2019 12:08 PM
Hi There
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.
Solved! Go to Solution.
07-22-2010 06:27 AM
Hello,
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
interfaces.
Interface range fa 0/1-24
Spanning-tree portfast
Or
Interface
Spanning-tree portfast
Hope this helps.
Regards,
NT
Note: Please rate helpful posts.
07-22-2010 06:27 AM
Hello,
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
interfaces.
Interface range fa 0/1-24
Spanning-tree portfast
Or
Interface
Spanning-tree portfast
Hope this helps.
Regards,
NT
Note: Please rate helpful posts.
07-23-2010 04:00 AM
Your a star. Thank you very much problem solved. : )
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