Layer 3 Routing Commands 1673Syntaxnsf [ietf] restart-interval secondsno nsf [ietf] restart-interval• ietf — This keyword is used to distinguish the IETF standardimplementation of graceful restart from other implementations. Since theIETF implementation is the only one supported, this keyword is optional.• seconds — The number of seconds that the restarting router asks itsneighbors to wait before exiting helper mode. The restarting routerincludes the restart interval in its grace LSAs (range 1–1800 seconds).Default ConfigurationThe default restart interval is 120 seconds.Command ModeRouter OSPFUser GuidelinesThe grace period must be set long enough to allow the restarting router toreestablish all of its adjacencies and complete a full database exchange witheach of those neighbors.Exampleconsole(config-router)#nsf restart-interval 180passive-interface defaultThe passive-interface default command enables the global passive mode bydefault for all interfaces. It overrides any interface level passive mode. Use the“no” form of this command to disable the global passive mode by default forall interfaces. Any interface previously configured to be passive reverts to non-passive mode.Syntaxpassive-interface defaultno passive-interface default
