MPLS and RSVP
7450 ESS MPLS Guide Page 185
Configuring Graceful Shutdown
TE graceful shutdown can be enabled on a specific interface using the 
config>router>rsvp>interface>graceful-shutdown command. This interface is referred to 
as the maintenance interface.
Graceful shutdown can be disabled by executing the no form of the command at the RSVP 
interface level or at the RSVP level. In this case, the user configured TE parameters of the 
maintenance links are restored and the maintenance node floods them.