Ciena Corporation

Fujitsu Corporation

Yalin Wang

Lyndon Y Ong

Vagish Madrahalli

Gilbert Levesque

Neena Aluri

Salim Galou

Brian Pheiffer

Kyle DeWayne McIntosh

Kevin Zhu

Alessandro Fabbri

Robert Bryttegard

Francois Lafontaine

Vinay Muniganti

Steven P Curtis

The present invention provides systems and methods for abstracting a network topology into virtual links and supporting both generic and instantiated virtualized links for linking a virtualized topology with actual resources within a domain, providing security over network topology information, providing control over the allocation of resources, and reducing the complexity of advertising.

System and method for supporting virtualized links at an exterior network-to-network interface

A bi-directional line switched mesh includes at least one bi-directional line switched ring (BLSR) sharing a common section with a partial bi-directional line switched ring (PBLSR). The partial bi-directional line switched ring has no working traffic along the common section, but may utilize the protection bandwidth associated with the common section of the BLSR in the event of a span failure of the PBLSR. Both electrical and optical PBLSR networks are also disclosed including methods of operating the asymmetrical ring nodes having unconfigured working ports (spans).

Bidirectional line switched partial rings, mesh networks, and methods of operation

A network management system program and graphical user interface for large-scale optical networks is described. The network management system includes a connection management system that allows a user to manually configure connections among network elements within the network. The user defines general connection attributes within the network and adds network elements to the route or routes. The user provisions crossconnects within each network element to establish the route connections. The connection management system includes a validation function to verify the validity of the user defined connections. A graphical user interface comprises a portion of a network management system that controls a network comprising a plurality of coupled computers. The graphical user interface includes a first user input area within a first display window allowing a user to specify a network address for a source node, a second user input area within the first display window allowing the user to specify a network address for a destination node, and a third user input area within a second display window allowing the user to graphically select a connection between the source node and one or more destination nodes in the network. The network management system program includes a first database storing the selected connection as a pending connection, a second database storing the selected connection as an active connection upon activation by the user, and a program module establishing a physical connection between the source and destination nodes upon activation by the user.

Connection management system and graphical user interface for large-scale optical networks

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San Jose, CA, United States of America

Yalin Wang