Analysis of Switching Control Channels in Ason

The introduction of control plane in ASON enables optical network intellective for the first time. As the channel to transfer message in control plane, the reliability of control channel significantly influences the performance of network. In traditional mechanism, control node should report fault to manager when control channel is down. In this paper, a new method of switching control channel is proposed and the process of switching among different modes of control channel is mainly focused on. Simulation results validate that the performance of network could be improved greatly by switching among control channels, the shorter switching time can lead to lower blocking probability.