MAC address for sending packets and uses the specified type of MAC address to answer ND requests
from hosts so that the hosts in the internal network can learn the mapping between the IPv6 address and

the MAC address.
The following types of MAC addresses are available to be mapped to the virtual IPv6 address of a VRRP

group:

•

Virtual MAC address—By default, a virtual MAC address is automatically created for a VRRP group

when the VRRP group is created, and the virtual IPv6 address of the VRRP group is mapped to the
virtual MAC address. When such a mapping is adopted, the hosts in the internal network do not

need to update the mapping between the IPv6 address and the MAC address when the master

changes.

•

Real MAC address of an interface—In case that an IP address owner exists in a VRRP group, if the
virtual IPv6 address is mapped to the virtual MAC address, two MAC addresses are mapped to one
IPv6 address. To avoid such as problem, map the virtual IPv6 address of the VRRP group to the real

MAC address of an interface to forward the packets from a host to the IP address owner.

When VRRP operates in load balancing mode, a virtual IPv6 address is always mapped to a virtual MAC

address regardless of which type of MAC addresses are specified to be mapped to virtual IPv6

addresses.
Specify the type of the MAC addresses mapped to the virtual IPv6 addresses before creating a VRRP

group. Otherwise, you cannot change the type of the MAC addresses mapped to virtual IPv6 addresses.
To specify the type of MAC addresses mapped to virtual IPv6 addresses:

This manual is related to the following products:

H3C MSR 30 H3C MSR 2600 H3C MSR 20-2X[40] H3C MSR 20-1X H3C MSR 930 H3C MSR 900