Introduction To Backup Group - H3C S7500 Series Operation Manual

Operation Manual – VRRP-HA
H3C S7500 Series Ethernet Switches
Note:
When you map a virtual IP address to the virtual MAC address on an S7500 switch, the
number of backup groups that can be configured on a VLAN interface is determined by
the chips used. Refer to device specification for detail.

1.1.2 Introduction to Backup Group

I. Configurations available on switches in a backup group
VRRP can group switches in a LAN into a virtual router, which is also known as a
backup group.
You can perform the following configuration on an S7500 switch that belongs to a
backup group.
Complete these tasks to configure switches in a backup group:
Configuring switch priority
Configuring preemptive mode for a switch in a backup group
Configuring authentication type and authentication key for a
switch in a backup group
Configuring VRRP timer
Configuring the VLAN interfaces/Ethernet ports to be tracked for
a backup group
II. Configuring switch priority
You can configure the priority of a switch in a backup group. VRRP will determine the
status of each switch in a backup group according to the priority of the switch. The
master switch in a backup group is the one currently with the highest priority.
Switch priority ranges from 0 to 255 (a larger number indicates a higher switch priority)
and defaults to 100. Note that only 1 through 254 are available to users. Switch priority
of 255 is reserved for IP address owners.
Note:
The priority of the IP address owner is fixed to 255.
Task
1-4
Chapter 1 VRRP Configuration
Remarks
Required
Required
Optional
Required
Required