Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

3750 port-security will not clear

We have several 3750 stacks across our campus that we are unable to completely clear port security on. We have mac address stick set up on all access ports. When we clear the sticky address on the port, the mac address is removed from the running config like normal, but we keep getting port-security voilations. If port security is taken off the port completely, i.e. no switchport port-security, traffic still doesn't pass the port. Even clear port security across the stack doesn't help. If we try to reload the stack, only the master reboots, and the other switches in the stack lose switch capabilities. In the end the only fix I have found is to pull the plug on each switch. Any ideas?

Everyone's tags (3)
VIP Super Bronze

3750 port-security will not clear

When you issue the reload command on a stack of 3750 switches, it will reboot the entire stack unless the stacking is not configured correctly.  As for your port security issue, that could be an IOS bug and an IOS upgrade may take care of it.


CreatePlease login to create content