Fujitsu Corporation

David Michael Colven

Stephen Joseph Brolin

Snigdho Chandra Bardalai

Abed Mohd Jaber

Li-Chang J Lin

Guoliang Wu

Srinivas Vunnava

Roy McNeil

Thomas K Brown

A method and system for identifying logical loops in an Ethernet network may determine a number of nodes N and a number of links L between nodes. A number of rings R, including a number of major rings and a number of sub-rings for the Ethernet network may be determined. Specific formulas for the values for L, R, and N may be evaluated to determine when the Ethernet network includes logical loops.

Method for identifying logical loops in ethernet networks

Providing a service includes establishing service parameter values for a service, where a service parameter value describes a metric of the service. The service parameter values are mapped to first network parameter values operable to configure a first wide area network port for a first transport mechanism. The service is provided over the first transport mechanism. The service parameter values are mapped to second network parameter values operable to configure a second wide area network port for a second transport mechanism. The service is provided over the second transport mechanism.

Mapping services to a transport mechanism

Modeling a ring network of a network system includes creating a ring object that models the ring network. The network system includes a network element that has components. The ring object includes provisioning properties, where a provisioning property describes configuring a component to become a member of the ring network. A component is associated with the ring object to allow the component to become a member of the ring network, where the associated component is allowed to receive packets communicated by the ring network. The ring object is stored at memory of the network element.

Modeling a ring network using a ring object

A method for bridging traffic over a network includes receiving, at stations that are coupled to the network, forwarding information for remote devices that are coupled to the network via the stations. The forwarding information associates a remote address of each remote device with an address of one of the stations. Each station that receives the forwarding information stores the forwarding information in a forwarding database. The method also includes receiving traffic at a first station from a first remote device that is coupled to the first station. The traffic includes a destination address that is a remote address of a second remote device that is coupled to a second station of the network. Furthermore, the method includes identifying an address of the second station that is associated with the remote address of the second remote device in the forwarding database. The method also includes communicating the traffic directly to the second station using the identified address.

Method and system for bridging traffic in a resilient packet ring network

A system provides more cost and bandwidth efficient utilization of a SONET network having both a Working path and a Protection path by using both communication paths to carry data. A system for communicating data over a Synchronous Optical Network/Synchronous Digital Hierarchy, the system comprises an Optical Line Termination unit operable to interface with a plurality of Synchronous Optical Network/Synchronous Digital Hierarchy communication paths, and communicate different data on each of the plurality of Synchronous Optical Network/Synchronous Digital Hierarchy communication paths.

Utilizing the protecting bandwidth in a SONET network

A method and system provides the capability to provision Dual Working mode service in a SONET network, while maintaining compatibility with existing SONET provisioning systems. In one embodiment of the present invention, a method for provisioning dual working mode in a Synchronous Optical Network/Synchronous Digital Hierarchy network comprises the steps of generating provisioning commands to provision a non-dual working mode of operation in the Synchronous Optical Network/Synchronous Digital Hierarchy network, modifying the generated commands to indicate to a first network element that dual working mode is being provisioned, and transmitting the modified commands to provision the Synchronous Optical Network/Synchronous Digital Hierarchy network.

Provisioning Ethernet dual working mode

A system for intercommunicating data traffic provides the capability to connect external interfaces that use one third or less of the OC3 bandwidth capacity in a reduced bandwidth mode that reduces system cost, while automatically switching to the full bandwidth mode to allow connection to external interfaces that utilize the full OC3 bandwidth capacity. A system for intercommunicating data traffic comprises a backplane having a plurality of data traffic communications connections operable to communicate data traffic, the backplane having a plurality of data rates of operation and a Service Unit having a plurality of external data traffic communications interfaces and a data traffic communications interface to the data traffic communications connections of the backplane, the Service Unit operable to communicate data between the plurality of external data traffic communications interfaces and the data traffic communications interface, the Service Unit further including a multiplexer operable to multiplex data from the plurality of external data traffic communications interfaces to the data traffic communications interface in a plurality of modes of operation.

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Dallas, TX, United States of America

David Michael Colven