Abstract: An orchestration layer includes one or more processing devices communicatively coupled to a plurality of domains in a multi-domain network, wherein the one or more processing devices are configured to receive a request for a path, wherein the path is requested from a source in a first domain to a destination in a second domain in a multi-domain network including a plurality of domains, relay the request to each domain in the multi-domain network, and wherein each domain in the multi-domain network is configured to compute a matrix fragment and the matrix fragments from a plurality of domains are used to find the path, and provide a response with the path from the source in the first domain to the destination in the second domain.

Abstract: A method for connecting endpoints. The method may include determining, using a first group of software threads, cross-connection information regarding various cross-connections among various network elements. The network elements may include a first network element and a second network element. The method may further include determining, using the first group of software threads, link information regarding various links between the network elements. The method may further include processing, within a network cache, the cross-connection information and the link information into various network resources groups. Each network resource group of the network resources groups may describe adjacent cross-connections for a link among the links.

Abstract: A method for connecting endpoints. The method may include determining, using a first group of software threads, cross-connection information regarding various cross-connections among various network elements. The network elements may include a first network element and a second network element. The method may further include determining, using the first group of software threads, link information regarding various links between the network elements. The method may further include processing, within a network cache, the cross-connection information and the link information into various network resources groups. Each network resource group of the network resources groups may describe adjacent cross-connections for a link among the links.

Abstract: In a management system of a communications network comprising a plurality of network elements, capacity and capability of one or more individual network elements is represented by a set of data templates. A first set of data templates represent internal construction and physical resources of a network element. A second set of templates represent connectivity capabilities of the physical resources. The data templates are stored at an element controller, controlling a plurality of network elements. The element controller learns about the capacity and capabilities of the network elements, by receiving a set of reference messages generated by the network elements, over an operations, administration and maintenance channel. The reference messages point to the data templates stored at the element controller thereby enabling efficient enrollment of network elements by transmission of compressed messages over the operations, administration and maintenance channel.

Abstract: A trail explorer and method for exploring trails in a communication network is described. The trail explorer is provided in a trail managing system having a trail database for storing connections in the network. The trail explorer compares the connections stored in the database and those actually provisioned in the network. When a connection exists in the network but is missing from the database, the trail explore triggers a learn process. If a connection exists in the database but is missing from the network, it marks the connection and trails using the connection as “unprovisioned” if they are not already marked so, or delete trails if they are network learned trails.

Abstract: A trail management system for a transport network comprises a database storing data describing each of a plurality of actual and intended/planned trails within a network. Each trail is described in terms of a state model, in which the trail is recorded as being in one of a plurality of stable states, e.g. ready for service, not ready for service, existing in the network but not fully recorded in the network management system, or assigned for deletion from the network. The trail data is modified by a set of automatic processes, by means of which a trail data may transition between stable states. Each trail data may adopt one of a plurality of sub-states, e.g. fully provisioned, incomplete, in conflict with another trail, inconsistent with another trail, unprovisioned, or unsupported by network resources. The network management system learns of actual existing trails within the network and checks for consistency of actual trails with stored trail data.