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RSVP Graceful Restart
RSVP graceful restart allows a router undergoing a restart to inform its adjacent neighbors of its condition. The restarting router requests a grace period from the neighbor or peer, which can then cooperate with the restarting router. The restarting router can still forward MPLS traffic during the restart period; convergence in the network is not disrupted. The restart is not visible to the rest of the network, and the restarting router is not removed from the network topology. RSVP graceful restart can be enabled on both transit routers and ingress routers. It is available for both point-to-point LSPs and point-to-multipoint LSPs.
RSVP graceful restart is described in the following sections:
- RSVP Graceful Restart Standard
- RSVP Graceful Restart Terminology
- RSVP Graceful Restart Operation
- Processing the Restart Cap Object
