4.4.6 SSL session ID
During establishment of an SSL encrypted session, a handshake protocol is used to negotiate a session ID. This handshaking phase consumes a good deal of CPU power, so directing subsequent HTTPS requests to the same server, using the already established SSL session, saves processing time and increases the overall performance of the HTTP server.
Load Balancer watches the packets during the handshake phase and holds information about the session ID if SSL session negotiation is detected.
The forwarding method used to configure SSL session ID affinity is the Dispatcher's CBR forwarding method.