Setting the Dead Time of a Neighbor Relationship
Procedure
- Run system-view
The system view is displayed.
- Run interface interface-type interface-number
The OSPF interface view is displayed.
- On an Ethernet interface, run undo portswitch
The interface is switched to Layer 3 mode.
By default, an Ethernet interface works in Layer 2 mode.
The mode switching function takes effect when the interface only has attribute configurations (for example, shutdown and description configurations). Alternatively, if configuration information supported by both Layer 2 and Layer 3 interfaces exists (for example, mode lacp and lacp system-id configurations), no configuration that is not supported after the working mode of the interface is switched can exist. If unsupported configurations exist on the interface, delete the configurations first and then run the undo portswitch command.
If many Ethernet interfaces need to be switched to Layer 3 mode, run the undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view to switch these interfaces to Layer 3 mode in batches.
- Run ospf timer dead interval
The dead time after which the neighbor relationship on the interface expires is set.
By default, the dead time of a neighbor relationship is 40s on a P2P or broadcast interface, and 120s on a P2MP or NBMA interface; the dead time of the neighbor relationship on an interface is four times the interval for sending Hello packets on the same interface.
If the dead interval of an OSPF neighbor is shorter than 10s, the session may be closed. Therefore, if dead interval is shorter than 10s, the actual dead interval of an OSPF neighbor is not shorter than 10s. If the conservative mode is configured using the ospf timer hello command, the configured dead timer takes effect even when its value is less than 10s.
Both the hello timer and the dead timer are restored to their respective default values upon a change of the network type.
- Run commit
The configuration is committed.
