Ospfv3 Graceful Restart Commands; Nsf (Ospfv) - NETGEAR M6100 Series Reference Manual

Default 1
Format
ipv6 ospf transmit-delay seconds
Mode Interface Config
no ipv6 ospf transmit-delay
This command sets the default OSPF Transit Delay for the specified interface.
Format
no ipv6 ospf transmit-delay
Mode Interface Config

OSPFv3 Graceful Restart Commands

The OSPFv3 protocol can be configured to participate in the checkpointing service, so that
these protocols can execute a graceful restart when the management unit fails. In a graceful
restart, the hardware to continues forwarding IPv6 packets using OSPFv3 routes while a
backup switch takes over management unit responsibility.
Graceful restart uses the concept of helpful neighbors. A fully adjacent router enters helper
mode when it receives a link state announcement (LSA) from the restarting management unit
indicating its intention of performing a graceful restart. In helper mode, a switch continues to
advertise to the rest of the network that they have full adjacencies with the restarting router,
thereby avoiding announcement of a topology change and and the potential for flooding of
LSAs and shortest-path-first (SPF) runs (which determine OSPF routes). Helpful neighbors
continue to forward packets through the restarting router. The restarting router relearns the
network topology from its helpful neighbors.
Graceful restart can be enabled for either planned or unplanned restarts, or both. You can
initiate a planned restart through the management command initiate failover. You
can initiate a failover in order to take the management unit out of service (for example, to
address a partial hardware failure), to correct faulty system behavior which cannot be
corrected through less severe management actions, or other reasons. An unplanned restart
is an unexpected failover caused by a fatal hardware failure of the management unit or a
software hang or crash on the management unit.
nsf (OSPFv3)
Use this command to enable the OSPF graceful restart functionality on an interface. To
disable graceful restart, use the no form of the command.
Default Disabled
Format
nsf [ietf] [planned-only]
Modes Router OSPFv3 Config
M6100 Series Switches
IPv6 Commands
949