protocols ospf area <area-id> virtual-link <ipv4> dead-interval <interval>
Sets the dead interval for a virtual link.
The dead interval is 4 times the hello interval.
- process pid
- Specifies the PID of an IPv4 OSPF process.
- area-id
- The ID of the OSPF area being configured, expressed as an IP address or a decimal value.
- ipv4
- The area ID of the virtual link, expressed as an IPv4 address.
- interval
- The time, in seconds, that the virtual link should wait to detect hello packets from neighboring routers before declaring the neighbor down. The interval ranges from 1 through 65535. The default interval is 4 times the hello interval.
Configuration mode
protocols {
ospf {
area area-id {
virtual-link ipv4 {
dead-interval interval
}
}
}
}Use this command to specify the interval during which a virtual link should expect a hello packet from its neighbor.
If the dead interval passes before the interface receives a hello packet from a neighbor, the status of the neighbor is changed to out-of-service and all associated state is cleared.
The dead interval must be the same for all routers that are to establish two-way communication within a network. If two routers do not agree on these parameters, they do not establish adjacencies and disregard communication from each other.
Use the set form of this command to set the dead interval for a link.
Use the delete form of this command to restore the default dead interval, which is 4 times the hello interval, for a link.
Use the show form of this command to display the dead interval for a link.