ospf timer dead
Function
The ospf timer dead command sets the dead interval of the OSPF neighbor.
The undo ospf timer dead command restores the default dead interval of the neighbor.
By default, for the interface of P2P and Broadcast, the dead interval for the OSPF neighbors is 40 seconds; for that of NBMA and P2MP, it is 120 seconds.
Parameters
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies dead interval of the OSPF neighbors. | The value is an integer ranging from 1 to 235926000,
in seconds. NOTE:
Setting the dead interval of an OSPF
neighbor to be longer than 20s is recommended. If the dead interval
of an OSPF neighbor is shorter than 20s, the session may be closed. |
Usage Guidelines
Usage Scenario
The dead interval of OSPF neighbors refers to that within this interval, if no Hello packet is received from the neighbor, the neighbor is considered as invalid. The dead interval on an OSPF-running interface must be greater than the transmission interval of Hello messages. In addition, the dead intervals of devices on the same network segment must be the same.
By default, the dead interval of OSPF neighbors is four times the transmission interval of Hello messages.
Precautions
OSPF does not support the configuration on a null interface.
