Users Guide

Layer 3 Routing Commands 1938
preempt
Use this command to configure the virtual router to preemptively take over as
primary virtual router for a Virtual Router Redundancy Protocol version 3
(VRRPv3) group if it has higher priority than the current primary virtual
router. To disable preemption, use the no form of the command.
Syntax
preempt [delay minimum centiseconds ]
no preempt
• delay minimum
centiseconds —(Optional) Number of seconds that the
device will delay before issuing an advertisement claiming primary
ownership. The default delay is 0 centiseconds. The valid range is 0 to
3600 centiseconds.
Default Configuration
This command is enabled by default. The default delay is 0 centiseconds.
Command Mode
VRRPv3 Group Configuration mode
User Guidelines
By default, the device being configured with this command will take over as
primary virtual router for the group if it has a higher priority than the current
primary virtual router. Configure a delay to cause the VRRP device to wait the
specified number of centiseconds before issuing an advertisement claiming
primary ownership.
Command History
Command introduced in version 6.6 firmware.
Example
The following example shows how to enable preemption with a 15
centisecond delay interval:
console(config-if-vrrp)# preempt delay minimum 15