Multiple-Vrrp Backup Group Configuration - H3C S7500 Series Operation Manual

Operation Manual – VRRP-HA
H3C S7500 Series Ethernet Switches
# Set the authentication type for the backup group to md5, and the password to
abc123.
[LSW-A-Vlan-interface2] vrrp authentication-mode md5 abc123
# Configure that the master switch to send VRRP packets once every 5 seconds.
[LSW-A-Vlan-interface2] vrrp vrid 1 timer advertise 5
# Set the tracked VLAN interface.
[LSW-A-Vlan-interface2] vrrp vrid 1 track Vlan-interface 3 reduced 30
Configure Switch B.
# Configure VLAN 2.
<LSW-B> system-view
System View: return to User View with Ctrl+Z.
[LSW-B] vlan 2
[LSW-B-vlan2] port Ethernet 2/0/5
[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.
[LSW-B] vrrp ping-enable
# Create a backup group.
[LSW-B] interface Vlan-interface 2
[LSW-B-Vlan-interface2] vrrp vrid 1 virtual-ip 202.38.160.111
# Set the authentication key for the backup group.
[LSW-B-Vlan-interface2] vrrp authentication-mode md5 abc123
# Set the master to send VRRP packets once 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.
When VLAN-interface 3 recovers, Switch A will resume its gateway function as the
master.

1.4.3 Multiple-VRRP Backup Group Configuration

I. Network requirements
A switch can function as backup switches of multiple backup groups.
Multiple-backup group configuration can implement load balancing. For example,
Switch A operates as the master switch of backup group 1 and a backup switch in
1-13
Chapter 1 VRRP Configuration