Alcatel-Lucent 7750 SR Manual page 1901

exception
Syntax [no] exception
Context debug>service>stp
Description This command enables STP debugging for exceptions.
The no form of the command disables debugging.
fsm-state-changes
Syntax [no] fsm-state-changes
Context debug>service>stp
Description
This command enables STP debugging for FSM state changes.
The no form of the command disables debugging.
fsm-timers
Syntax [no] fsm-timers
Context debug>service>stp
Description This command enables STP debugging for FSM timer changes.
The no form of the command disables debugging.
port-role
Syntax [no] port-role
Context debug>service>stp
Description
This command enables STP debugging for changes in port roles.
The no form of the command disables debugging.
port-state
Syntax [no] port-state
Context debug>service>stp
Description This command enables STP debugging for port states.
The no form of the command disables debugging.
7750 SR OS Services Guide
VPRN Debug Commands
Page 1901