Networking Requirements

As shown in Figure 1.

• CX-A serves as the master CX device of backup group 1 and the backup CX device of backup group 2.
• CX-B serves as the master CX device of backup group 2 and the backup CX device of backup group 1.
• Host A in the internal network takes backup group 1 as its gateway and Host C takes backup group 2 as its gateway to share the traffic and backup each other.

Figure 1 Networking diagram of configuring VRRP in load balancing mode

Procedure

1. Configure the network interconnection between devices.
   # Configure the default gateway of Host A as the virtual IP address 10.1.1.111 in backup group 1, the default gateway of Host B as 20.1.1.1, and the default gateway of Host C as the virtual IP address 10.1.1.112 in backup group 2.
   # Configure CX-A, CX-B, and CX- C to use OSPF for interconnection.
2. Configure VRRP.
   # On CX-A, configure the IP address of the interface, create backup backup group 1 and configure the priority of CX-A in this backup group as 120 (as the master CX device). Create backup group 2 and configure the priority of CX-A in this backup group with the default value 100 (as the backup CX device).

   <CX-A> system-view

   [CX-A] interface gigabitethernet 2/0/0

   [CX-A-GigabitEthernet2/0/0] undo shutdown

   [CX-A-GigabitEthernet2/0/0] ip address 10.1.1.1 24

   [CX-A-GigabitEthernet2/0/0] vrrp vrid 1 virtual-ip 10.1.1.111

   [CX-A-GigabitEthernet2/0/0] vrrp vrid 1 priority 120

   [CX-A-GigabitEthernet2/0/0] vrrp vrid 2 virtual-ip 10.1.1.112

   [CX-A-GigabitEthernet2/0/0] quit

   # On CX-B, configure the IP address of the interface, create backup backup group 1 and configure the priority of CX-B in this backup group with the default value 100 (as the backup CX device). Create backup group 2, and configure the priority of CX-B in this backup group with 120 (as the master CX device).

   <CX-B> system-view

   [CX-B] interface gigabitethernet 2/0/0

   [CX-B-GigabitEthernet2/0/0] undo shutdown

   [CX-B-GigabitEthernet2/0/0] ip address 10.1.1.2 24

   [CX-B-GigabitEthernet2/0/0] vrrp vrid 1 virtual-ip 10.1.1.111

   [CX-B-GigabitEthernet2/0/0] vrrp vrid 2 virtual-ip 10.1.1.112

   [CX-B-GigabitEthernet2/0/0] vrrp vrid 2 priority 120

   [CX-B-GigabitEthernet2/0/0] quit
3. Verify the configuration.
   After the previous configuration, Host A and Host C in the network can ping through Host B.
   Tracert Host B from Host A and Host C. Packets from Host A to Host B pass through CX-A and CX-C. Packets from Host C to Host B pass through CX-A and CX-C. That is, the load balancing is enabled for CX-A and CX-B to share the internal traffic.

   <HostA> tracert 20.1.1.100

   traceroute to 20.1.1.100 (20.1.1.100), max hops: 30, packet length: 40, press CTRL_C to break

    1   10.1.1.1     120 ms  50 ms  60 ms

    2   192.168.1.2  100 ms  60 ms  60 ms

    3   20.1.1.100   130 ms  90 ms  90 ms

   <HostC> tracert 20.1.1.100

   traceroute to 20.1.1.100 (20.1.1.100), max hops: 30, packet length: 40, press CTRL_C to break

    1   10.1.1.2     30 ms  60 ms  40 ms

    2   192.168.2.2  90 ms  60 ms  60 ms

    3   20.1.1.100   70 ms  60 ms  90 ms

   Running the display vrrp command on CX-A, you can view that CX-A serves as the master CX device in backup group 1 and the backup CX device in backup group 2.

   <CX-A> display vrrp

   <CX-A> display vrrp

     GigabitEthernet2/0/0 | Virtual Router 1

       state         : Master

       Virtual IP     : 10.1.1.111

       Master IP      : 10.1.1.1

       PriorityRun    : 120

       PriorityConfig : 120

       MasterPriority : 120

       Preempt        : YES     Delay Time : 0

       TimerRun       : 1

       TimerConfig    : 1

       Auth Type      : NONE

       Virtual Mac    :  0000-5e00-0101

       Check TTL      : YES

       Config type    : normal-vrrp

     GigabitEthernet2/0/0 | Virtual Router 2

       state         : Backup

       Virtual IP     : 10.1.1.112

       Master IP      : 10.1.1.2

       PriorityRun    : 100

       PriorityConfig : 100

       MasterPriority : 120

       Preempt        : YES     Delay Time : 0

       TimerRun       : 1

       TimerConfig    : 1

       Auth Type      : NONE

       Virtual Mac    :  0000-5e00-0102

       Check TTL      : YES

       Config type    : normal-vrrp