ipv6 ospf dead-interval
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- Last UpdatedJul 20, 2017
- 1 minute read
ipv6 ospf dead-interval
Specifies the time period for which a neighbor router waits for a hello packet from the device before declaring the router down.
The specified time period is 40 seconds.
interval
| Dead interval in seconds. Valid values range from 2 through 65535 seconds.
|
Interface subtype configuration mode
If you change the dead interval, the hello interval is automatically changed to a value that is one fourth that of the new dead interval, unless the hello interval is also explicitly configured using the ipv6 ospf hello-interval command.
The recommended setting is that:
- The dead interval is four times that of the hello interval.
- The hello interval is ¼ times that of the dead interval.
- If the OSPF hello interval and dead interval are set to more aggressive levels than 1:4 seconds respectively, the OSPF protocol might flap when the write memory command is used or in the case of any high CPU.
The running-config command displays only explicitly configured values of the hello interval, which means that a value that was automatically changed as the result of a dead-interval change is not displayed.
The no form of the command restores the default value.
The following example sets the dead interval to 80 on a specific OSPFv3 virtual Ethernet (VE) interface.
device# configure terminal
device(config)# interface ve 1
device(config-vif-1)# ipv6 ospf dead-interval 80