Displaying the Recovery State by Port Number and Cause
To see which ports are under an errdisabled state, use the
show errdisable summary command. This command not only shows the port number, but also displays the reason
why the port is in an errdisable state and the method used to recover the port. In
this example, port 1/2/6 is errdisabled for a BPDU guard violation.
device# show errdisable summary Port 1/2/6 ERR_DISABLED for bpduguard