Configuration guidelines, Configuration prerequisites, Configuration procedure – H3C Technologies H3C WX3000E Series Wireless Switches User Manual
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NOTE:
•
When VRRP is operating in load balancing mode, the address mapping setting does not take effect, and
virtual IP addresses are always mapped to virtual MAC addresses.
•
Specify the type of the MAC addresses mapped to the virtual IP addresses before creating a VRRP
group. You cannot change the address mapping setting after a VRRP group is created.
Creating a VRRP group and configuring virtual IP address
Configuration guidelines
•
You can configure multiple virtual IP addresses for the VRRP group on an interface that connects to
multiple subnets for router backup on different subnets.
•
The VRRP group is automatically created when you specify the first virtual IP address. If you later
specify another virtual IP address for the VRRP group, the virtual IP address is added to the virtual
IP address list of the VRRP group.
•
An interface can be configured with only one VRRP group, and a VRRP group can be assigned with
up to 16 virtual IP addresses.
•
The virtual IP address assigned to the VRRP group must be a legal host address and in the same
subnet as the interface IP address. If not, the state of the VRRP group is always initialize and VRRP
does not take effect. For example, although you can successfully configure a network address or
broadcast address as the virtual IP address of a VRRP group, the group cannot work.
•
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 subnet 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.
•
In load balancing mode, the virtual IP address of a VRRP group cannot be the same as the IP
address of any interface in the VRRP group.
•
A VRRP group is removed after you remove all its virtual IP addresses, and all its configurations
become invalid.
•
Removal of the VRRP group on the IP address owner causes IP address collision. To avoid the
collision, change the IP address of the interface on the IP address owner before you remove the
VRRP group from the interface.
•
The virtual IP address of a VRRP group cannot be 0.0.0.0, 255.255.255.255, loopback addresses,
non class A/B/C addresses or other illegal IP addresses such as 0.0.0.1.
Configuration prerequisites
Before creating a VRRP group and configuring a virtual IP address on an interface, configure an IP
address for the interface and make sure that it is in the same subnet as the virtual IP address.
Configuration procedure
To create a VRRP group and configure a virtual IP address:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter the specified interface
view.
interface interface-type
interface-number
N/A