Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 1763

OSPF only advertises IP subnets for secondary IP addresses if the secondary address is within the range of a network area command for the same area as the primary address on the same interface. When a network area command is deleted, matching interfaces are reevaluated against all remaining network area commands. Ones in the wildcard mask indicate "don't care" bits in the network address. Example console(config-router)#network 10.50.50.0 0.0.0.255 area 4 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 OSPF Configuration mode User Guidelines Graceful restart works in concert with nonstop forwarding to enable the hardware to continue forwarding IPv4 packets using OSPFv2 routes while a backup unit takes over management unit responsibility. When OSPF Layer 3 Routing Commands 1763