VPLS Debug Commands
7750 SR OS Services Guide Page 1725
fsm-timers
Syntax [no] fsm-timers
Context debug>service>id>stp
Description This command enables STP debugging for FSM timer changes.
port-role
Syntax [no] port-role
Context debug>service>id>stp
Description This command enables STP debugging for changes in port roles.
port-state
Syntax [no] port-state
Context debug>service>id>stp
Description This command enables STP debugging for port states.