You can adjust the value of the Hello timer to change the speed of the OSPF neighbor relationship establishment and change the network convergence speed.
Hello packets are periodically sent between OSPF interfaces to establish and maintain neighbor relationships. The intervals set on the interfaces at both ends must be the same. Otherwise, the OSPF neighbor relationship cannot be established.
The system view is displayed.
The OSPF interface view is displayed.
The interval at which Hello packets are sent is set on the OSPF 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 ospf timer dead command takes effect even when the value is less than 10s.
To speed up OSPF convergence in the case of a link failure, configuring BFD For OSPF is recommended. If the remote end does not support BFD for OSPF or you do not want to configure BFD for OSPF, specify conservative when you run the ospf timer hello command. If the conservative mode is configured, the value configured for the dead timer using the ospf 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.