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spanning-tree topology changes

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D@1984
Beginner

hi,

on my root switch when I run #show spanning-tree vlan 20 details, I get the below:

Number of topology changes 5020 last change occurred 03:45:37 ago
from GigabitEthernet1/0/22

But when I try to see what is connected to GigabitEthernet1/0/22 by doing show mac-address table or show cdp neighbors, there is no output, the interface status shows that it's connected though. I don't have physical access to the site. Is there any other command I can use to see what port is connected too?

I have a quite high cpu utilisation on my switch and the number of topology changes seems to be quite high,  I'm trying to find out whats going on.

 

Thanks

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