Reference Guide

belonging to either subnet 50.1.1.0/24 or subnet 60.1.1.0/24, but not from both subnets (though
Dell Networking OS 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 you configure multiple VRRP groups on an interface, only one of the VRRP Groups can contain the
interface primary or secondary IP address.
• On an S4820T stack system, if a force failover is performed on a master stack unit, the VRRP virtual
addresses are disabled. To re-enable VRRP, execute the mac-address-table station-move
refresh-arp command.
Configuring a Virtual IP Address
To configure a virtual IP address, use the following commands.
1. Configure a VRRP group.
INTERFACE mode
vrrp-group vrrp-id
The VRID range is from 1 to 255.
2. Configure virtual IP addresses for this VRID.
INTERFACE -VRID mode
virtual-address ip-address1 [...ip-address12]
The range is up to 12 addresses.
Example of the virtual-address Command
Example of Verifying the Virtual IP Address Configuration
Example of Verifying the VRRP Group Priority
Dell(conf-if-gi-1/1-vrid-111)#virtual-address 10.10.10.1
Dell(conf-if-gi-1/1-vrid-111)#virtual-address 10.10.10.2
Dell(conf-if-gi-1/1-vrid-111)#virtual-address 10.10.10.3
Dell(conf-if-gi-1/1-vrid-111)#
NOTE: In the following example, the primary IP address and the virtual IP addresses are on the same
subnet.
Dell(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
Dell(conf-if-gi-1/1)#
Virtual Router Redundancy Protocol (VRRP)
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