The value of vRtrRsvpIfGraceHelper specifies whether graceful restart
helper mode is enabled or disabled. When the graceful restart helper
mode when enabled, the system will advertise Restart capability object
which will allow neighboring router to request for a grace period
during which the system will continue to use previously established
RSVP session. This is typically used when a neighboring router's
control plane restarts but its forwarding plane is expected to
continue to forward traffic.
The system will advertise Restart capability object with value of the
restart, and the recovery times always set to 0.