3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring VRRP for IPv4 769
Creating Standby Group
and Configuring Virtual
IP Address
Configuration prerequisites
Before creating standby group and configuring virtual IP address, you should first
configure the IP address of the interface and ensure that the virtual IP address to
be configured is in the same network segment as the IP address of the interface.
Configuration procedure
Follow these steps to create standby group and configure virtual IP address:
c
CAUTION:
■ For Switch 8800s, the maximum number of VRRPv2 standby groups on an
interface is 16, the maximum number of virtual IP addresses in a standby group
is 16 and the maximum number of standby groups on a switch is 64.
■ A standby group is removed after you remove all the virtual IP addresses in it. In
addition, configurations on that standby group no longer take effect.
■ The virtual IP address of the standby group cannot be 0.0.0.0,
255.255.255.255, loopback address, non A/B/C address and other illegal IP
addresses such as 0.0.0.1.
■ Only when the configured virtual IP address and the interface IP address belong
to the same segment and are legal host addresses can the standby group
operate normally; otherwise. the state of the standby group is always
Initialize.
Configuring Priority,
Preemption Mode and
Interface Tracking for a
Standby Group
Configuration prerequisites
Before you configure these features, you should first create a standby group on
the interface and configure virtual IP address for it.
Configuration procedure
By configuring priority, preemption mode and interface tracking for a standby
group, you can decide which switch in the standby group serves as the Master.
Follow these steps to configure priority, preemption mode and interface tracking
for a standby group:
To do... Use the command... Remarks
Enter system view system-view -
Enter VLAN interface view interface interface-type
interface-number
-
Create standby group and
configure virtual IP address of
the standby group
vrrp vrid virtual-router-id
virtual-ip virtual-address
Required
Standup group is not created
by default.
To do... Use the command... Remarks
Enter system view system-view -
Enter VLAN interface view interface interface-type
interface-number
-
Configure switch priority in
the standby group
vrrp vrid virtual-router-id
priority priority-value
Optional
100 by default.