configure ospf virtual-link timer

configure ospf virtual-link router-identifier area-identifier timer retransmit-interval transit-delay hello-interval dead-interval


Configures the timers for a virtual link.

Syntax Description

router-identifier Specifies the router ID of the other end of the link.
area-identifier Specifies an OSPF (Open Shortest Path First) area.
retransmit-interval Specifies the length of time that the router waits before retransmitting an LSA that is not acknowledged. The range is 1 - 3,600 seconds.
transit-delay Specifies the length of time it takes to transmit an LSA packet over the interface. The range is 0 - 3,600 seconds.
hello-interval Specifies the interval at which routers send hello packets. The range is 1 - 65,535 seconds.
dead-interval Specifies the interval after which a neighboring router is declared down due to the fact that hello packets are no longer received from the neighbor. The range is 1 - 2,147,483,647 seconds.


  • retransmit interval—Default: 5
  • transit delay—Default: 1
  • hello interval—Default: 10
  • dead interval—Default: 40
  • wait timer interval—Default: dead interval

Usage Guidelines

Configuring OSPF timers on a per-area basis is a shorthand for applying the timers and authentication to each VLAN (Virtual LAN) in the area at the time of configuration. If you add more VLANs to the area, you must configure the timers and authentication for the new VLANs explicitly.


The following command sets the timers on the virtual link in area and remote router ID

configure ospf virtual-link timer 10 1 20 200


This command was first available in ExtremeXOS 10.1.

Platform Availability

This command is available on platforms with an Advanced Edge or Core license as described in the ExtremeXOS 22.2 Feature License Requirements document.