5 Replies Latest reply: May 4, 2012 3:36 AM by Lorenzo RSS

    BPDU Guard issue....

    Jimmy Sands

      I was trying to understand bpduguard, I put fa0/1 on SW1 as spanning-portfast, never went down.  I put bpduguard on int, never went down, I sh/no shut the int and got this:

       

      *Mar  1 01:39:21.943: %SPANTREE-2-BLOCK_BPDUGUARD: Received BPDU on port Fa0/1 with BPDU Guard enabled. Disabling port.

      *Mar  1 01:39:21.943: %PM-4-ERR_DISABLE: bpduguard error detected on Fa0/1, putting Fa0/1 in err-disable state

       

      Why did it take a sh/no shut to bring about this error?