Command Mode
Interface (VLAN)
Command Usage
• A router that has a physical interface with the same IP address as tha t used
for the virtual router (that is, the owner of the VR RP IP address) will becom e
the master virtual router. The backup router with the highest priority will
become the master router if the current master fails. When the original master
router recovers, it will take over as the active master router again.
• If two or more routers are configured with the same VRRP pr iority, the route r
with the highest IP address is elected as the new ma ster router if the current
master fails.
• If the backup preempt function is enable d with the vrrp pr eem pt command,
and a backup router with a pri ority h igher than t he c urre nt acting mast er
comes on line, this backup router will ta ke over as the new ac ting m aster.
However, note that if the original master (i.e., th e owner of the VRRP IP
address) comes back on line, it will always re sume control as the master.
• If the virtual IP address for the VRRP group is the same as that of th e
configured device, the priority will automatically be set to 255 prior to using
this command.
Example
Console(config-if)#vrrp 1 priority 1
Console(config-if)#
Related Commands
vrrp preempt (40-5)
vrrp timers advertise
This command sets the interval at which the master v irtual router sends
advertisements communicating its state as the master. Use the
no
form to restore
the default interval.
Syntax
vrrp group timers advertise in terval
no vrrp group timers advertise
• group - Identifies the VRRP group. ( Range: 1- 255)
• interval - Advertisement interval for the maste r virtual router.
(Range: 1-255 seconds)
Default Setting
1 second
40-4
Router Redundancy Commands
40