Multiple-Vrrp Group Configuration - 3Com 5500-EI PWR Install Manual

[LSW-B-vlan2] quit
[LSW-B] interface Vlan-interface 2
[LSW-B-Vlan-interface2] ip address 202.38.160.2 255.255.255.0
[LSW-B-Vlan-interface2] quit
# Configure that the virtual router can be pinged through.
[LSW-B] vrrp ping-enable
# Create a VRRP group.
[LSW-B] interface Vlan-interface 2
[LSW-B-Vlan-interface2] vrrp vrid 1 virtual-ip 202.38.160.111
# Configure the authentication key for the VRRP group.
[LSW-B-Vlan-interface2] vrrp vrid 1 authentication-mode md5 abc123
# Configure the master to send VRRP packets every 5 seconds.
[LSW-B-Vlan-interface2] vrrp vrid 1 timer advertise 5
Normally, Switch A functions as the gateway, but when VLAN-interface 3 on Switch A goes down, its
priority will be reduced by 30, lower than that of Switch B so that Switch B will preempt the master for
gateway services instead.
When VLAN-interface 3 recovers, switch A will resume its gateway function as the master.

Multiple-VRRP Group Configuration

Network requirements
A switch can function as a backup of multiple VRRP groups.
Multiple-VRRP group configuration can implement load balancing. For example, Switch A acts as the
master of VRRP group 1 and a backup in VRRP group 2. Similarly, Switch B acts as the master of VRRP
group 2 and a backup in VRRP group 1. Some hosts in the network take virtual router 1 as the gateway,
while others take virtual router 2 as the gateway. In this way, both load balancing and mutual backup are
implemented.
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