3550 Switch Ports closing

[CajunEcureuil]

Problem:

Ports randomly closing on our 3550 switch. I had at one point thought it was our blackbox connection from fiber to ethernet that was the problem. After a few tests I found it to be a port problem. We have two switches, both having the same problem.

Any suggestions?

But all in all I have no idea what the problem might be.

Any help would be appreciated. I was thinking it might be the port security, but will look more into it.

Thanks...

 

[MTandSAV]

could be spanning-tree issue.

CCNA, CCNP..partly

 

[dirtyhat]

CajunEcureuil,

Have you also verified that you do not have any switches conntected to ports with bpuduguard enabled?

If you still have problems, post a config of the two switches.