Ospf Graceful Restart Commands; Show Ip Ospf Virtual-Link Brief - NETGEAR ProSafe M7100-24X User Manual

Term Definition
Hello Interval
The configured hello interval for the OSPF virtual interface.
Dead Interval
The configured dead interval for the OSPF virtual interface.
Iftransit Delay
The configured transit delay for the OSPF virtual interface.
Interval
Retransmit
The configured retransmit interval for the OSPF virtual interface.
Interval
Authentication
The configured authentication type of the OSPF virtual interface.
Type
State
The OSPF Interface States are: down, loopback, waiting, point-to-point, designated
router, and backup designated router. This is the state of the OSPF interface.
Neighbor State
The neighbor state.

show ip ospf virtual-link brief

This command displays the OSPF Virtual Interface information for all areas in the system.
Format
show ip ospf virtual-link brief
Modes
• Privileged EXEC
• User EXEC
Term Definition
Area ID
The area id of the requested OSPF area.
Neighbor
The neighbor interface of the OSPF virtual interface.
Hello Interval
The configured hello interval for the OSPF virtual interface.
Dead Interval
The configured dead interval for the OSPF virtual interface.
Retransmit
The configured retransmit interval for the OSPF virtual interface.
Interval
Transit Delay
The configured transit delay for the OSPF virtual interface.

OSPF Graceful Restart Commands

The OSPF 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 IPv4 packets using OSPF 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,
ProSafe Managed Switch
Routing Commands
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