Vrrp load balancing mode configuration example, Network requirements – H3C Technologies H3C SR8800 User Manual

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[RouterB-GigabitEthernet4/1/1] display vrrp ipv6 verbose

IPv6 Standby Information:

Run Mode : Standard

Run Method : Virtual MAC

Total number of virtual routers : 2

Interface GigabitEthernet4/1/1

VRID : 1 Adver Timer : 100

Admin Status : Up State : Backup

Config Pri : 100 Running Pri : 100

Preempt Mode : Yes Delay Time : 0

Auth Type : None

Virtual IP : FE80::10

1::10

Master IP : FE80::1

Interface GigabitEthernet4/1/1

VRID : 2 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 110 Running Pri : 110

Preempt Mode : Yes Delay Time : 0

Auth Type : None

Virtual IP : FE80::20

1::20

Virtual MAC : 0000-5e00-0202

Master IP : FE80::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 1::10/64 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 1::20/64

accesses the Internet through Router B.

NOTE:

To implement load balancing between the VRRP groups, be sure to configure the default gateway 1::10 or
1::20on the hosts on the subnet 1::/64.

VRRP load balancing mode configuration example

Network requirements

Router A, Router B, and Router C belong to VRRP group 1 with the virtual IPv6 addresses of

FE80::10 and 1::10.

Hosts on network segment 1::/64 learn FE80::10 as their default gateway through RA messages

sent by the routers. Configure 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 external networks 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 4/1/2. 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.

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