Use this option to provide Layer 4 load balancing of TCP or UDP traffic with the Barracuda Load Balancer ADC.
Deploying the Barracuda Load Balancer ADC in a two-armed configuration provides greater performance but requires you to change the IP addresses of all your real servers. If a Layer 4 type of service is used, you must set the Barracuda Load Balancer ADC as the default gateway for all downstream real servers so that the Barracuda Load Balancer ADC can handle the responses that are issued by these servers to client requests.
Figure 1. Two-armed Route-Path network with Layer 4 services.
