H3C Technologies H3C SR8800 - Manual (Page 83)

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Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 2
Interface GigabitEthernet4/1/1
VRID : 1 Adver Timer : 1
Admin Status : Up State : Backup
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 0
Auth Type : None
Virtual IP : 202.38.160.111
Master IP : 202.38.160.1
Interface GigabitEthernet4/1/1
VRID : 2 Adver Timer : 1
Admin Status : Up State : Master
Config Pri : 110 Running Pri : 110
Preempt Mode : Yes Delay Time : 0
Auth Type : None
Virtual IP : 202.38.160.112
Virtual MAC : 0000-5e00-0102
Master IP : 202.38.160.2
The output shows that in VRRP group 1 Router A is the master, Router B is the backup and the host
with the default gateway of 202.38.160.111/24 accesses the Internet through Router A; in VRRP
group 2 Router A is the backup, Router B is the master and the host with the default gateway of
202.38.160.112/24 accesses the Internet through Router B.
NOTE:
To implement load balancing between the VRRP groups, be sure to configure the default gateway as
202.38.160.111 or 202.38.160.112 on the hosts on network segment 202.38.160.0/24.
VRRP load balancing mode configuration example
Network requirements
• Router A, Router B, and Router C belong to VRRP group 1 with the virtual IP address of 10.1.1.1/24.
• Hosts on network segment 10.1.1.0/24 use 10.1.1.1/24 as their default gateway. Use the VRRP
group to make sure that when a gateway (Router A, Router B, or Router C) fails, the hosts on the
LAN can access the external network through another gateway.
• VRRP group 1 works in load balancing mode to make good use of network resources.
• Configure a track entry on Router A, Router B, and Router C respectively to monitor their own
GigabitEthernet 3/1/2. When the interface on Router A, Router B, or Router C fails, the weight of
the corresponding router decreases so that another router with a higher weight can take over.