Creating A Vrrp Group And Configuring Virtual Ip Address - HP 6125G Configuration Manual

from hosts so that the hosts in the internal network can learn the mapping between the IP address and the
MAC address.
The following types of MAC addresses are available to be mapped to the virtual IP address of a VRRP
group:
Virtual MAC to virtual IP mapping—By default, a virtual MAC address is automatically created for
•
a VRRP group when the VRRP group is created, and the virtual IP 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 IP address and MAC address when the
master changes.
• Real MAC to virtual IP mapping—In case that an IP address owner exists in a VRRP group, if the
virtual IP address is mapped to the virtual MAC address, two MAC addresses are mapped to one
IP address. To avoid such as problem, map the virtual IP 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.
Configuration guidelines
When VRRP is operating in load balancing mode, a virtual IP address is always mapped to a virtual
•
MAC address regardless of which type of MAC addresses are specified to be mapped to virtual IP
addresses.
• Specify the type of the MAC addresses mapped to the virtual IP addresses before creating a VRRP
group. Otherwise, you cannot change the type of the MAC addresses mapped to virtual IP
addresses.
If VRRP groups with the same ID are created on multiple interfaces of a device, and the VRRP
•
advertisements of these VRRP groups are to be sent through QinQ networks, HP recommends you
to map the real MAC addresses of the interfaces to the virtual IP addresses of these VRRP groups.
Otherwise, the VRRP advertisements of these VRRP groups cannot be sent successfully.
Configuration procedure
To specify the type of MAC addresses mapped to virtual IP addresses:
Step
1. Enter system view.
2. Specify the type of MAC
addresses mapped to virtual
IP addresses.

Creating a VRRP group and configuring virtual IP address

When creating a VRRP group on an interface, configure a virtual IP address for the VRRP group. If the
interface connects to multiple sub-networks, you can configure multiple virtual IP addresses for the VRRP
group to realize router backup on different sub-networks.
A VRRP group is automatically created when you specify the first virtual IP address for the VRRP group.
If you specify another virtual IP address for the VRRP group later, the virtual IP address is added to the
virtual IP address list of the VRRP group.
Configuration guidelines
When VRRP is operating in standard protocol mode, the virtual IP address of a VRRP group can be
•
either an unused IP address on the segment where the VRRP group resides or the IP address of an
interface on a router in the VRRP group. In the latter case, the router is called the IP address owner.
Command
system-view
vrrp method { real-mac |
virtual-mac }
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Remarks
N/A
Optional.
Virtual MAC address by default.