Reference Guide

766 | Virtual Router Redundancy Protocol (VRRP)
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• If the virtual IP address and the interface’s primary/secondary IP address are the same, the priority on
that VRRP group MUST be set to 255. The interface then becomes the OWNER router of the VRRP
group and the interface’s physical MAC address is changed to that of the owner VRRP group’s MAC
address.
• If multiple VRRP groups are configured on an interface, only one of the VRRP Groups can contain the
interface primary or secondary IP address.
Configure a Virtual IP address with these commands in the following sequence in the INTERFACE mode.
Figure 44-4. Command Example: virtual-address
Figure 44-5. Command Example Display: show config for the Interface
Figure 44-6 shows the same VRRP group configured on multiple interfaces on different subnets.
Step Task Command Syntax Command Mode
1 Configure a VRRP group.
vrrp-group vrrp-id
VRID Range: 1-255
INTERFACE
2 Configure virtual IP addresses
for this VRID.
virtual-address ip-address1 [...ip-address12]
Range: up to 12 addresses
INTERFACE -VRID
FTOS(conf-if-gi-1/1-vrid-111)#virtual-address 10.10.10.1
FTOS(conf-if-gi-1/1-vrid-111)#virtual-address 10.10.10.2
FTOS(conf-if-gi-1/1-vrid-111)#virtual-address 10.10.10.3
FTOS(conf-if-gi-1/1-vrid-111)#
FTOS(conf-if-gi-1/1)#show conf
!
interface GigabitEthernet 1/1
ip address 10.10.10.1/24
!
vrrp-group 111
priority 255
virtual-address 10.10.10.1
virtual-address 10.10.10.2
virtual-address 10.10.10.3
!
vrrp-group 222
no shutdown
FTOS(conf-if-gi-1/1)#
Note that the Primary IP address
and the Virtual IP addresses are
on the same subnet