Dell PowerEdge M520 Dell PowerConnect M6220/M6348/M8024/M8024-k CLI Referen - Page 1174
Example, nsf, Syntax, Default Configuration, Command Mode, User Guidelines
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Example The following example sets the number of paths that OSPF can report for a destination to 1. console(config)#ipv6 router ospf console(config-rtr)#maximum-paths 1 nsf Use this command to enable OSPF graceful restart. Use the "no" form of this command to disable graceful restart. Syntax nsf [ietf] [planned-only] no nsf [ietf] ietf - This keyword is used to distinguish the IETF standard implementation of graceful restart from other implementations. Since the IETF implementation is the only one supported, this keyword is optional. planned-only - This keyword indicates that OSPF should only perform a graceful restart when the restart is planned (i.e., when the restart is a result of the initiate failover command). Default Configuration Graceful restart is disabled by default Command Mode Router OSPFv3 Configuration mode User Guidelines Graceful restart works in concert with nonstop forwarding 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 that it will be back shortly. Helpful neighbors continue to advertise to the rest of the network that they have full adjacencies with the restarting router, avoiding announcement of a topology change and 1174 OSPFv3 Commands
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