H3C Technologies H3C S10500 Series Switches - Manual (Page 145)

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Configuring VRRP for IPv6
VRRP for IPv6 configuration task list
Complete these tasks to configure VRRP for IPv6:
Task Remarks
Specifying the type of MAC addresses mapped to virtual IPv6 addresses Optional
Creating a VRRP group and configuring a virtual IPv6 address Required
Configuring router priority, preemptive mode and tracking function Optional
Configuring VRRP packet attributes Optional
Specifying the type of MAC addresses mapped to virtual IPv6
addresses
After you specify the type of MAC addresses mapped to the virtual IPv6 address of VRRP groups and
create a VRRP group, the master in the VRRP group uses the specified type of MAC address as the source
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.
Follow these steps to specify the type of MAC addresses mapped to virtual IPv6 addresses:
To do… Use the command… Remarks
Enter system view system-view —
specify the type of MAC addresses
mapped to virtual IPv6 addresses vrrp ipv6 method { real-mac |
virtual-mac } Optional
Virtual MAC address by default
NOTE:
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.