VRRP Configuration Command Reference
410 Router Configuration Guide
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.
Virtual Router IP Address Assignment without Parent IP Address — When assigning an IP
address to a virtual router instance, an associated IP address (see backup and backup) on the
parental IP interface must already exist. If an associated IP address on the parental IP interface
is not configured, the virtual router IP address assignment fails.
Parent Primary IP Address Changed — When a virtual router IP address is set and the
associated parent IP interface IP address is changed, the new parent IP interface IP address is
evaluated to ensure it meets the association rules defined in backup or backup. If the
association check fails, the parental IP address change is not allowed. If the parental IP
address change fails, the previously configured IP address definition remains in effect.
Only the primary parent IP address can be changed. Secondary addresses must be removed
before the new IP address can be added. backup explains IP address removal conditions.
Parent Primary or Secondary IP Address Removal — When a virtual router IP address is
successfully set, but removing the associated parent IP interface IP address is attempted and
fails. All virtual router IP addresses associated with the parental IP interface IP address must
be deleted prior to removing the parental IP address. This includes virtual router IP address
associations from multiple virtual router instances on the IP interface.
Parameters ip-address — The virtual router IP address expressed in dotted decimal notation. The IP virtual
router IP address must be in the same subnet of the parental IP interface IP address or equal
to one of the primary or secondary IP addresses for owner virtual router instances.
Values 1.0.0.1 - 223.255.255.254
backup
Syntax backup ipv6-address
no backup
Table 34: Example - Non-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 Associated with 10.10.10.10 (in subnet)
10.10.10.10 Invalid (same as parent IP address)
10.10.11.11 Invalid (outside of all Parent IP subnets)
11.11.11.254 Associated with 11.11.11.11 (in subnet)
11.11.11.255 Invalid (broadcast address of 11.11.11.11/
24)
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