Internet Signaling Protocol

Signaling has become necessary for allowing IP-based networks to manage states in network nodes. However, existing protocols cannot deliver desired signaling services needed for large-scale deployment. The Cross-Application Signaling Protocol (CASP), a general-purpose signal-ing protocol, introduces a new approach to overcome the limitations of these protocols. This thesis reports a prototype implementation of the CASP trans-port layer protocol using TCP as the underlying transport protocol, and studies the feasibility of the modular design. The behavior of this implementation has been analyzed through an experimental testbed. Performance results show that the memory and CPU consumption of the implementation are low even under heavy signaling loads; the round trip time of signaling messages is also accept-able. Although further work will be necessary, critical design choices in CASP have been proved to be feasible