Converged Load Balancing Algorithm for Converged Applications

Converged load balancer applies appropriate algorithms for HTTP/HTTPS and SIP/SIPS messages from converged applications, as follows:

• If no DCR file is specified, applies the sticky round robin algorithm for HTTP/HTTPS messages and the consistent hash algorithm for SIP/SIPS messages.

• If a DCR file is specified, applies the consistent hash algorithm for both HTTP/HTTPS messages and SIP/SIPS messages.

  For HTTP and HTTPS messages belonging to converged applications, if any of the rules in the DCR file match the HTTP/HTTPS request, a hash key is extracted using that rule. If none of the instructions or rules in the DCR file match the HTTP/HTTPS request, a hash key is extracted using remote host and port of the HTTP request.

  For SIP and SIPS messages, if any of the rules in the DCR file match the SIP/SIPS request, a hash key is extracted using that rule. If none of the instructions or rules in the DCR file match the SIP or SIPS request, a hash key is generated using the from-tag,call-id parameters of the request.