Alcatel-Lucent 7710 SR OS Configuration Manual page 277

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.
One exception to this rule is for the IPv6 link-local address that is configured as a backup address.
The same link-local address can be configured in all virtual routers that use the same vrid.
Example - Non-Owner Virtual Router Instance
Virtual Router IP Address Assignment without Parent IP Address — When assigning an
IP address to a virtual router instance, an associated IP address (see Owner Virtual Router IP
Address Parental Association and Non-Owner Virtual Router IP Address Parental Association)
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.
Virtual Router IPv6 Address Assignment — An IPv6 backup address requires that the parental
IP address that is in the same subnet as the backup address must be manually configured, non-EUI-64
and configured to be in the preferred state.
Default
no backup — No virtual router IP address is assigned.
Parameters ipv6-address — The virtual router IP address expressed in dotted decimal notation. The IP virtual
7710 SR OS Router Configuration Guide
Parent IP addresses:
Virtual router IPv6 addresses:
router IP address must be in the same subnet of the parental IP interface IP address or equal to
one of the the parent interface addresses for owner virtual router instances.
Values ipv6-address
10.10.10.10/24
11.11.11.11/24
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)
x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x::d.d.d.d
x: [0..FFFF]H
d: [0..255]D
VRRP
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