Introduction To Backup Group - Huawei Quidway S5600 Series Operation Manual

Operation Manual – VRRP
Quidway S5600 Series Ethernet Switches-Release 1510

1.1.3 Introduction to Backup Group

VRRP can group switches in a LAN into a virtual router, which is also known as a
backup group.
Table 1-1 Configuration available on switches in a backup group
Configure switch priority
Configure preemptive mode
Configure
and authentication key
Configure VRRP timer
Configure the VLAN interfaces to
be tracked for a backup group
I. Switch priority in a backup group
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.
II. Preemptive mode for a switch in a backup group
As long as a switch in the backup group becomes the master switch, other switches,
even if they are configured with a higher priority later, do not preempt the master switch
unless they operate in preemptive mode. The switch operating in preemptive mode will
become the master switch when it finds its priority is higher than that of the current
master switch, and the former master switch becomes a backup switch accordingly.
Configuration
authentication type
Huawei Technologies Proprietary
Description
Section 1.1.3
Required
priority"
Section 1.1.3 II. "Preemptive
Required mode for a switch in a backup
group"
Section
"Authentication
Optional
authentication
switch in a backup group"
Section 1.1.3
Required
timer"
Section 1.1.3 V. "The VLAN
Required interfaces to be tracked for a
backup group"
1-4
Chapter 1 VRRP Configuration
Related section
I. "Switch
1.1.3
type
key for
IV. "VRRP
III.
and
a