Netgear GSM7328SO Command Line Interface (CLI) User Manual - Page 429
OSPFv3 Graceful Restart Commands, nsf OSPFv3, no nsf [ietf] OSPFv3, nsf helper OSPFv3
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ProSafe Managed Switch Term Retransmit Interval Transit Delay Definition The configured retransmit interval for the OSPFV3 virtual interface. The configured transit delay for the OSPFV3 virtual interface. OSPFv3 Graceful Restart Commands The managed switch implementation of OSPFv3 supports graceful restart as specified in RFC 5187 and RFC 3623. Graceful restart works together with managed switch non-stop forwarding (nsf) to enable the hardware to continue forwarding IPv6 packets using OSPFv3 routes while a backup unit takes over management unit responsibility. When OSPF executes a graceful restart, it informs its neighbors that the OSPF control plane is restarting but will be back shortly. Helpful neighbors continue to advertise to the network that they have full adjacencies with the restarting router, avoiding announcement of a topology change and related events (for example, flooding of LSAs and SPF runs). Helpful neighbors continue to forward packets through the restarting router. The restarting router relearns the network topology from its helpful neighbors. Graceful restart implements both the restarting router and helpful neighbor features described in RFC 3623. nsf (OSPFv3) This command enables OSPF graceful restart. The ietf parameter is used to distinguish the IETF standard implementation of graceful restart from other implementations. Since the IETF implementation is not the only one supported, this parameter is optional. The planned-only parameter indicates that OSPF performs a graceful restart only when the restart is planned (that is, when the restart results from the initiate failover command). Default Format Mode disabled nsf [ ietf ] [ planned-only ] OSPFv3 Router Configuration mode no nsf [ietf] (OSPFv3) This command disables OSPF graceful restart. Format Mode no nsf [ ietf ] OSPFv3 Router Configuration mode nsf helper (OSPFv3) This command allows OSPF to act as a helpful neighbor for a restarting router. The planned-only parameter indicates that OSPF should only help a restarting router performing a planned restart. IPv6 Commands 429