You can adjust the value of the Hello timer to change the speed of OSPFv3 neighbor relationship establishment and the network convergence speed.
Hello packets are periodically sent to the neighbor router to detect and maintain the neighbor relationship and to elect the DR and the BDR. Based on standard protocols, the Hello timer values of neighbors must be the same. The value of the Hello timer is inversely proportional to the route convergence speed and network load.
The system view is displayed.
The interface view is displayed.
The interval at which Hello packets are sent is set on the interface.
If the conservative parameter is specified in the command, the conservative mode is configured for the dead timer. If the conservative mode is configured, the value configured for the dead timer using the ospfv3 timer dead command takes effect even when the value is less than 10s.
To speed up OSPFv3 convergence in the case of a link failure, configuring BFD For OSPFv3 is recommended. If the remote end does not support BFD for OSPFv3 or you do not want to configure BFD for OSPFv3, specify conservative when you run the ospfv3 timer hello command. If the conservative mode is configured, the value configured for the dead timer using the ospfv3 timer dead command takes effect even when the value is less than 10s; if the value configured for the dead timer is greater than 10s, services may be affected.
The configuration is committed.