[nsp] Using router or switch to detect "other" switches.

Robert Boyle robert at tellurian.com
Thu Feb 5 14:30:22 EST 2004

At 01:57 PM 2/5/2004, you wrote:
>Enabling port security, allowing only 1 mac at a time per port will put a 
>quick end to the Netgears.  Also, I think there is something called 
>'bpdu-guard' that will let a port function in either port fast mode or 
>with spanning tree totally off.  But if it receives a BPDU on that port, 
>it shuts it down immediately.  Other than that, you could span the VLAN 
>and look for non-Cisco BPDUs, based on the MAC OUI.

If you do enable that, don't forget to enable the timer which will attempt 
to restore service every x minutes so their service works again once the 
stp sending device is removed.


Tellurian Networks - The Ultimate Internet Connection
http://www.tellurian.com | 888-TELLURIAN | 973-300-9211
"Good will, like a good name, is got by many actions, and lost by one." - 
Francis Jeffrey

More information about the cisco-nsp mailing list