Sun GlassFish Communications Server 2.0 Deployment Planning Guide

Converged Load Balancer

The load balancer distributes the workload among multiple physical machines, thereby increasing the overall throughput of the system.

The load balancer plug-in accepts SIP, SIPS, HTTP, and HTTPS requests and forwards them to one of the application server instances in the cluster. Should an instance fail, become unavailable (due to network faults), or become unresponsive, requests are redirected to existing, available machines. The load balancer can also recognize when a failed instance has recovered and redistribute the load accordingly.