Layer 3 Routing Commands 1746Syntaxnsf [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 OSPFv3 Configuration modeUser 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.passive-interfaceUse the passive-interface command to set the interface or tunnel as passive.It overrides the global passive mode that is currently effective on the interfaceor tunnel. Use the “no” form of this command to set the interface or tunnelas non-passive.Syntaxpassive-interface {vlan vlan-id | tunnel tunnel-id}no passive-interface {vlan vlan-id | tunnel tunnel-id}• vlan-id — The VLAN number• tunnel-id — Tunnel identifier. (Range: 0–7)
