The ospfv3 timer dead command sets the dead interval for the OSPFv3 neighbor in the instance to which an interface belongs.
The undo ospfv3 timer dead command restores the default value.
By default, the dead interval of OSPFv3 neighbors is 40 seconds on a P2P or broadcast interface. The command cannot be run on P2MP and NBMA interfaces.
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Usage Scenario
If no Hello packet is received from a neighbor within a dead interval, the neighbor is considered invalid. The dead interval of devices in the same network segment must be consistent.
Precautions
The command cannot be run on a null interface.
If the dead interval of an OSPFv3 neighbor is shorter than 10s, the session may be closed. Therefore, if dead interval is shorter than 10s, the actual dead interval of an OSPFv3 neighbor is not shorter than 10s. If the conservative mode is configured using the ospfv3 timer hello command, the configured dead timer takes effect even when its value is less than 10s. To speed up OSPFv3 convergence in the case of a link failure, configuring BFD For OSPFv3 is recommended.<HUAWEI> system-view [~HUAWEI] ospfv3 1 [*HUAWEI-ospfv3-1] quit [*HUAWEI] interface GigabitEthernet 0/1/0 [*HUAWEI-GigabitEthernet0/1/0] ipv6 enable [*HUAWEI-GigabitEthernet0/1/0] ospfv3 1 area 0 instance 1 [*HUAWEI-GigabitEthernet0/1/0] ospfv3 timer dead 80 instance 1