R3204P16-HP Load Balancing Module Typical Configuration Examples-6PW101

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Server load balancing stateful failover
configuration example
Network requirements
Configure NAT-mode load balancing on the LB module installed on the A7503 to achieve load
balancing between the private servers, which have a public IP address assigned to allow external users
to access. When access demand and traffic to the servers are large, you can configure stateful failover
to improve network reliability, ensuring that users can access the servers.
Figure 54 Network diagram for stateful failover
Configuration considerations
Configure two VRRP groups between the two A7503 switches. Use VRID 15 as the gateway from the
client to the LB modules and VRID 192 as the gateway from the LB modules to the client. Configure a VRRP
group (VRID 191) between the two LB modules, and use VRID 191 as the gateway to servers.
Software version used
This example is configured and verified on R3204P12.