Lucent Technologies Inc.

Alcatel-lucent USA Inc.

Ted Chongpi Lee

Thomas Peter Tignor

Danilo Puseljic

Rulei Ting

Reza Shafie-Khorasani

Susan Rose Russo

Yudhveer S Bagga

Arati Chaudhury

Chin-Yeh Chi

Chain N Yung

Chinh Q Le

Charleen E Hird

Arun K Rai

William W Pretyka

A method and apparatus for providing a load balanced circuit path between a source node and a destination node within a SONET ring comprising a plurality of nodes and connected by links by iteratively selecting facilities within a link that have bandwidth utilization levels that are below a threshold level. In an alternative embodiment, an alternate path is selected in case facilities meeting the threshold level can not be found. The threshold level is changed incrementally if facilities and links within the first path and/or alternate path do not meet the threshold levels.

Method and apparatus for SONET/SDH ring load balancing

A network management system for a multi-layer network having multiple architectural or technological domains includes an inter-domain configuration manager arranged between a set of one or more network service management applications and a set of network element domain managers, each of the domain managers being associated with a particular domain of the multi-layer network. The configuration manager implements network service design and provisioning functions across the domains of the network in conjunction with stored connectivity information characterizing the multi-layer network. The network management system further includes an inter-domain fault manager and an inter-domain capacity manager, which provide respective fault management and transport capacity management functions across the domains of the multi-layer network. The inter-domain configuration manager, inter-domain fault manager and inter-domain capacity manager may be interfaced to the set of network service management applications and the set of network element domain managers through corresponding published Common Object Request Broker Architecture (CORBA) Application Programming Interfaces (APIs).

Inter-domain network management system for multi-layer networks

The invention comprises a method and apparatus for managing adjunct access and leased facilities in network management systems. The invention advantageously provides a continuous circuit by opportunistically using cross connect links to represent the connection of managed and non-managed portions of a circuit.

Method and apparatus for managing adjunct access and leased facilities

A method and apparatus for determining a circuit path between a source node and a destination node within a network comprising a plurality of nodes by iteratively selecting appropriate next nodes using a shortest path algorithm and accepting or rejecting the selected next node based upon the bandwidth utilization level of the communications link to the next node. In the case of a lack of acceptable communication links or a determined circuit path exceeding an ideal circuit path by a predetermined amount, the threshold levels defining acceptable links are adjusted.

Method and apparatus for computing the shortest path between nodes based on the bandwidth utilization link level

A method and apparatus for adapting a network topology including at least one hybrid digital cross-connect system (DCS)/SONET ring structure such that DCS network elements are managed by a DCS element management system, while SONET network elements such as ring structures are managed by a SONET element management system. A digital link is created to separate pure DCS equipment from SONET equipment within the hybrid DCS. Based on this separation, the hybrid DCS is logically decomposed into separate DCS and SONET equipment such that a SONET ring structure including an add-drop multiplexer (ADM) included within the DCS may be managed as a homogeneous SONET ring by a SONET network element manager, while the DCS equipment is managed by a DCS element manager.

Configuration management of a hybrid DCS-SONET ring network

In an environment where databases are shared, it is important that the information contained within the databases be consistent among databases containing the respective information. Thus, there is a need for a method and apparatus for synchronizing databases containing related information comprising the steps of detecting a change to at least one database record in any of a first plurality of databases based on a first set of parameters; notifying a controller of the change; and updating, according to the detected change, each of a second plurality of databases containing the respective database record in response to a determination that the change falls within a second parameter.

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Holmdel, NJ, United States of America

Ted Chongpi Lee