A Design To Strengthen Survivability Of Control Plane Of ASON

Today, existing optical network cannot meet the users on the requirements of economy and efficiency any more, also cannot make full use of the net resource. The other shortage is that its poor ability to provide businesses and it's complexity of net updating. In this context, the conception of intelligent network is proposed. Among all kinds of the intelligent networks, Automatically Switched Optical Networks (ASON) represents the mainstream of them. The main research field of this thesis is how to strengthen the survivability of ASON's Control Plane (CP)The first and second chapters of this thesis gives an introduction of current research status of ASON, researching significance of ASON's CP, ASON and CP structure, optical network protocol set, the concept of CP and the significance of survivability.The third chapter first describes the importance of the survivability of CP, then divide the existing ASON's CC (Connection Control) module into four submodules. Expound the logic function of Protection/Restoration and the importance of the Protection/Restoration rules and strategy. At last, I give out a Protection/Restoration rule and tactics in detail and a very useful improvement for the current CP.Chapter Four enhances the survivability of ASON control plane from the perspective of software engineering. Be different from the existing CP design, I add a Control Plane Alarm Management (CPA_MGR) module into the CP creatively. This module is aim at managing alarms and exception messages of CP. At last of this chapter, I show the data in the experiment with the improved CP.In the end of thesis I summed it up and make an outlook for the future researching of ASON.