3Com Switch 8800 Family IPsec Module Configuration and Command reference Guide

Configuring VRRP 233
Adding or Deleting a
Virtual IP Address
You may assign an IP address on this network segment to a virtual router or
standby group or delete the specified or all virtual IP address from the virtual
address list.
Perform the following configuration in interface view.
The standby group number virtual-router-ID is in the range 1 to 255. The virtual IP
address can be an unassigned address on the network segment to which the
standby group belongs, or the IP address of an interface in the standby group. In
the latter case, the security gateway with the IP address is called IP address owner.
The system creates a standby group the first time that you assign an IP address to
it. When you assign virtual IP addresses to the group after that, the system only
adds the addresses to the virtual IP address list of this standby group. You can
assign an interface to 14 standby groups, while one standby group can
accommodate up to 16 virtual IP addresses.
Note that before you can configure a standby group, you must create it by
assigning an IP address to it. Deleting the last virtual IP address from the standby
group also deletes the standby group. After that, all its configurations become
invalid.
Configuring Priority in a
Standby Group
In VRRP, the role that a security gateway plays in a standby group depends on its
priority. The security gateway with the highest priority becomes the master.
The priority is in the range 0 to 255, with a larger number indicating a higher
priority. However, the configurable range is 1 to 254. The priority 0 is reserved for
special use and 255 for the IP address owner.
Perform the following configuration in interface view.
The priority is 100 by default.
n
The IP address owner has two priorities: configurable and operating. The
configurable priority is the one assigned using the vrrp vrid command and the
operating priority is always 255 and not configurable.
Tab le 247 Add/delete a virtual IP address
Operation Command
Add a virtual IP address.
vrrp vrid virtual-router-ID virtual-ip
virtual-address
Delete the specified or all virtual IP addresses.
undo vrrp vrid virtual-router-ID virtual-ip
virtual-address
Tab le 248 Configure the priority of the interface in the standby group
Operation Command
Configure the priority of the interface in the
standby group.
vrrp vrid virtual-router-ID priority
priority-value
Restore the default value. undo vrrp vrid virtual-router-ID priority