A method for managing one or more class levels of service between a communication network and one or more other networks, including retrieving network information of network devices in the communication network; generating a customizable traffic engineering database based on the retrieved network information; receiving user input of path computation parameters; generating path information corresponding to optimal paths for a subset of the network devices; validating the generated path information; generating path configuration information based on the validated path information; transmitting the path configuration information to one or more of the network devices; generating an external service model comprising plural exit points for connecting to points of presence of the communication network corresponding to the path configuration information; and interconnecting the communication network with the one or more other networks on the one or more class levels of service through the plural exit points.