R0106-HP MSR Router Series High Availability Configuration Guide(V7)

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• In load balancing mode, the virtual IPv6 address of a VRRP group cannot be the same as the IPv6
address of any interface in the VRRP group.
• The maximum number of VRRP groups that you can create on an interface is 16. The maximum
number of virtual IPv6 addresses that you can assign to a VRRP group is 16.
• In VRRP load balancing mode, the device supports a maximum of MaxVRNum/N VRRP groups.
MaxVRNum refers to the maximum number of VRRP groups supported by the device in VRRP
standard mode, and N refers to the number of devices in the VRRP group.
• If you create an IPv6 VRRP group but do not assign any virtual IPv6 addresses to it, the VRRP group
stays in inactive state and does not function.
• To avoid IP address collisions, change the IPv6 address of the interface on the IP address owner
before you remove the VRRP group from the interface.
• The virtual IPv6 addresses of an IPv6 VRRP group and the IPv6 address of the interface where the
VRRP group is configured must be in the same subnet. Otherwise, hosts on the subnet cannot access
external networks.
Configuration procedure
To create a VRRP group and assign a virtual IPv6 address:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Create a VRRP group and
assign a virtual IPv6 address,
which is a link-local address.
vrrp ipv6 vrid virtual-router-id
virtual-ip virtual-address link-local
By default, no VRRP group exists.
The first virtual IPv6 address that
you assign to an IPv6 VRRP group
must be a link-local address, and it
must be the last address you
remove. Only one link local
address is allowed in a VRRP
group.
4. (Optional.) Assign a virtual
IPv6 address, which is a global
unicast address.
vrrp ipv6 vrid virtual-router-id
virtual-ip virtual-address
By default, no global unicast
address is assigned for an IPv6
VRRP group.
Configuring the router priority, preemptive mode, and tracking
function
Configuration guidelines
• The running priority of an IP address owner is always 255, and you do not need to configure it. An
IP address owner always operates in preemptive mode.
• If you associate a track entry with a VRRP group on an IP address owner, the association does not
take effect until the router becomes a non-IP address owner.
• When the track entry changes from Negative to Positive or Notready, the router automatically
restores its priority.