The set protocols vrrp interface vrid preempt enable command configures the preemptive mode of the device in a VRRP group.
This command applies to both VRRPv2 and VRRPv3 configuration.
set protocols vrrp interface <interface-name> vrid <virtual-router-id> preempt enable <true | false>
Specifies the Layer 3 interface name of VRRP device. The value is a string.
Specifies the VRID of a VRRP group. The value is an integer that ranges from 1 to 254.
preempt enable <true | false>
Enables or disables the preemptive mode of the device. The value could be true or false.
By default, preemptive mode is enabled.
To enable the device with higher priority in a VRRP group to be the master, set the preemptive mode on the device.
For the backup device, if it has a higher priority than the master, the working mode of the backup (preemptive or non-preemptive) determines whether the master is re-selected.
- Preemptive mode: If the priority of the backup router is higher than the priority of the current master router, the backup router automatically becomes the master router.
- Non-preemptive mode: As long as the master router is working properly, the backup router with a higher priority cannot become the master router.
By default, the preemptive mode is enabled, therefore, the device with a high priority is the master of the VRRP group.
The IP address owner always works in preemptive mode, regardless of whether the preemption function is enabled or not.
- Enable the preemptive mode of the device in a VRRP group.