VRRP Configuration Command Reference
412 Router Configuration Guide
The no form of the command removes the specified virtual router IP address from the virtual router
instance. For non-owner virtual router instances, this causes all routing and local access associated
with the ipv6-addr to cease. For owner virtual router instances, the no backup command only removes
ipv6-addr from the list of advertised IP addresses. If the last ipv6-addr or the link-local address is
removed from the virtual router instance, the virtual router instance will enter the operationally down
state
Default no backup — No virtual router IP address is assigned.
Special Cases Assigning the Virtual Router ID Address — Once the vrid is created on the parent IP interface,
IP addresses need to be assigned to the virtual router instance. If the vrid was created with the
keyword owner, the virtual router instance IP addresses must have one or more of the parent
IP interface defined IP addresses. For non-owner virtual router instances, the virtual router IP
addresses each must be within one of the parental IP interface IP address defined local
subnets. For both owner and non-owner virtual router instances, the virtual router IP
addresses must be explicitly defined using the backup ipv6-addr command.
The following rules apply when adding, changing, or removing parental and virtual router IP
addresses:
Owner Virtual Router IP Address Parental Association — When an IP address is assigned to
an owner virtual router instance, it must be associated with one of the parental IP interface-
assigned IP addresses.
Non-Owner Virtual Router IP Address Parental Association — When an IP address is
assigned to a non-owner virtual router instance, it must be associated with one of the parental
IP interface assigned IP addresses. The virtual router IP address must be a valid IP address
within one of the parental IP interfaces local subnet. Local subnets are created by the link-
local or global IP addresses in conjunction with the IP addresses mask. If the defined virtual
router IP address is equal to the associated subnet’s broadcast address, it is invalid. Virtual
router IP addresses for non-owner virtual router instances that are equal to a parental IP
interface IP address are also invalid.
The same virtual router IP address may not be assigned to two separate virtual router
instances. If the virtual router IP address already exists on another virtual router instance, the
virtual router IP address assignment will fail.
Table 35: Example - Owner Virtual Router Instance
Parent IP addresses: 10.10.10.10/24
11.11.11.11/24
Virtual router IP addresses: 10.10.10.11 Invalid (not equal to parent IP address)
10.10.10.10 Associated (same as parent IP address
10.10.10.10)
10.10.11.11 Invalid (not equal to parent IP address)
11.11.11.254 Invalid (not equal to parent IP address)
11.11.11.255 Invalid (not equal to parent IP address)
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