Users Guide

Assign Virtual IP addresses
Virtual routers contain virtual IP addresses congured for that VRRP group (VRID). A VRRP group does not transmit VRRP packets until
you assign the Virtual IP address to the VRRP group.
To activate a VRRP group on an interface (so that VRRP group starts transmitting VRRP packets), congure at least one virtual IP address
in a VRRP group. The virtual IP address is the IP address of the virtual router and does not require the IP address mask.
You can congure up to 12 virtual IP addresses on a single VRRP group (VRID).
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 congured on the interface. Though a
single VRRP group can contain virtual IP addresses belonging to multiple IP subnets congured on the interface, Dell Networking
recommends conguring virtual IP addresses belonging to the same IP subnet for any one VRRP group.
– For example, an interface (on which you enable VRRP) 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 the system 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 congure multiple VRRP groups on an interface, only one of the VRRP Groups can contain the interface primary or secondary IP
address.
Conguring a Virtual IP Address
To congure a virtual IP address, use the following commands.
1 Congure a VRRP group.
INTERFACE mode
vrrp-group vrrp-id
The VRID range is from 1 to 255.
2 Congure 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
Dell(conf-if-te-1/1-vrid-111)#virtual-address 10.10.10.1
Dell(conf-if-te-1/1-vrid-111)#virtual-address 10.10.10.2
Dell(conf-if-te-1/1-vrid-111)#virtual-address 10.10.10.3
Dell(conf-if-te-1/1-vrid-111)#
Example of Verifying the Virtual IP Address Conguration
NOTE
: In the following example, the primary IP address and the virtual IP addresses are on the same subnet.
Dell(conf-if-te-1/1)#show conf
!
interface Tengigabitethernet 1/1
ip address 10.10.10.1/24
!
vrrp-group 111
priority 255
Virtual Router Redundancy Protocol (VRRP)
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