Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 2 VRRP Configuration Commands
3Com Corporation
2-5
undo vrrp vrid virtual-router-ID preempt-mode
View
Interface view
Parameter
virtual-router-ID: Virtual router ID or VRRP standby group number, in the range 1 to
255.
delay-value: Delay in the range 0 to 255 seconds. It defaults to 0 seconds.
Description
Use the vrrp vrid preempt-mode command to enable preemption on the router and
configure its preemption delay in the specified standby group.
Use the undo vrrp vrid preempt-mode command to disable preemption on the router
in the specified standby group.
The default mode is preemption without delay.
To allow a backup router in a standby group to preempt the current master when it has
a higher priority, you must enable preemption on it. If immediate preemption is not
desired, you can set a preemption delay. The delay automatically changes to 0 seconds
when preemption is disabled.
Example
# Enable preemption on the router in standby group 1.
[3Com -Ethernet0/2/0] vrrp vrid 1 preempt-mode
# Set the preemption delay to five seconds.
[3Com -Ethernet0/2/0] vrrp vrid 1 preempt-mode timer delay 5
# Disable preemption on the router in standby group 1.
[3Com -Ethernet0/2/0] undo vrrp vrid 1 preempt-mode
2.1.7 vrrp vrid priority
Syntax
vrrp vrid virtual-router-ID priority priority-value
undo vrrp vrid virtual-router-ID priority
View
Interface view
Parameter
virtual-router-ID: VRRP standby group number, in the range 1 to 255.