Management and control mechanisms in multi-domain heterogeneous optical networks

When multi-domain heterogeneous optical networks inter-connect with each other,the inter-domain inter-communication on the management and control planes becomes difficult. Analyses and simulation results show that the path computation element( PCE)based control mechanism gives better optimization of the routing and reduced the inter-domain interactive information,but provides less connection control compared with other management and control mechanisms. A management and control architecture,the PCE and ICCE-based optical network e-signaling exchange and routing( PIONEER) architecture,is given here to enhance the connection control capability of PCE. Key technologies supporting this architecture are also investigated. The effectiveness of the PIONEER architecture to manage and control SDH and OTN domains is shown on two experimental platforms, including a functionality verification platform with 10 real optical nodes and a performance evaluation platform with 1 000 emulated optical nodes. Tests show that the architecture provides good inter-communication between multi-domain heterogeneous optical networks,with good real time characteristics,scalability, survivability and reliability of automatic connection provisioning.