Associating a VRRP Group with an Interface

You can associate a VRRP group with a VRRP-disabled interface on the master device. If the master device detects that the status of the VRRP-disabled interface changes, it rapidly performs a master/backup VRRP switchover.

Context

The master device cannot detect changes in the status of interfaces that are not in a VRRP group. If a VRRP-disabled interface connected to a network fails, the master device cannot detect the fault and still forwards user packets through the failed interface, which results in service interruptions.

To prevent this issue, associate the VRRP group with the VRRP-disabled interface. If the interface goes Down, the VRRP group detects the fault, reduces the priority of the master device, and sends VRRP Advertisement packets to elect a new master device.

Perform the following steps on a device on which an interface needs to be associated with a VRRP group:

Procedure

Run system-view
The system view is displayed.
Run interface interface-type interface-number
The view of the interface on which the VRRP group is configured is displayed.
Run vrrp vrid virtual-router-id track interface { interface-name | interface-type interface-number } [ increased value-increased | reduced value-decreased ]
The VRRP group is associated with a specified interface.
- increased value-increased specifies the value by which the VRRP priority increases if the associated interface goes Down. The value is an integer ranging from 1 to 255. Only the IP address owner has a priority of 255. The highest priority can reach 254.
- reduced value-decreased specifies the value by which the VRRP priority reduces if the associated interface goes Down. The value is an integer ranging from 1 to 255. The lowest priority can reach 1.
- When the device is the IP address owner, the device cannot be configured with a tracked interface.
- If VRRP is configured on an Eth-Trunk interface, VRRP does not track the statuses of member interfaces of the Eth-Trunk interface.
Run commit
The configuration is committed.