Reference Guide

876 | Virtual Router Redundancy Protocol (VRRP)
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The following rules apply to virtual IP addresses:
• The virtual IP addresses must be in the same subnet as the primary or secondary IP addresses
configured on the interface. Though a single VRRP group can contain virtual IP addresses belonging
to multiple IP subnets configured on the interface, Dell Networking recommends you configure virtual
IP addresses belonging to the same IP subnet for any one VRRP group.
For example, an interface (on which VRRP is to be enabled) contains a primary IP address of 50.1.1.1/24 and a
secondary IP address of 60.1.1.1/24. The VRRP Group (VRID 1) must contain virtual addresses belonging to
either subnet 50.1.1.0/24 or subnet 60.1.1.0/24, but not from both subnets (though FTOS allows the same).
• 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 51-4. Command Example: virtual-address
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-te-1/1-vrid-111)#virtual-address 10.10.10.1
FTOS(conf-if-te-1/1-vrid-111)#virtual-address 10.10.10.2
FTOS(conf-if-te-1/1-vrid-111)#virtual-address 10.10.10.3
FTOS(conf-if-te-1/1-vrid-111)#