Tellabs Operations, Inc.

Other

Timothy Y Chow

Philip J Lin

James D Mills

Vishal Sharma

Steven R Dunstan

Charles E Rohrs

Joseph Cerra

Anthony M Ffrench

Fabian A Chudak

A low-cost, high-speed data switching system and method uses several parallel switching systems or fabrics. In one of various embodiments, for example, the constituent data flows in a data stream can be selectively routed to a switching fabric that has the lowest input data rate. Data flows can be assigned to the various switching fabrics so as to balance the amount of data passing through each parallel system. Data flows can be re-assigned on an as-needed basis to insure maximum throughput. In the case where a data flow initially routed into one switching fabric must be re-routed to a different fabric, the ordering of data packets can be preserved by withholding the transfer of packets through the second fabric until the packets previously sent into the first fabric have cleared. Methods and apparatus of the present invention find application to parallel computing as well.

Method and apparatus to switch data flows using parallel switch fabrics

A method and system for designing a bi-connected ring-based network is provided, which designs from scratch or converts an existing network to a dual-homed ring-based network. The network covers the locations capable of being bi-connected with one or more cycles/rings. The traffic demand is then routed via the cycles, in such a way so as to minimize the amount of network traffic management equipment required.

Method and system for designing ring-based telecommunications networks

A telecommunications mesh network includes a plurality of nodes each interconnected by an edge. A traffic demand is received having a working path with a link of edges interconnecting a source node with a destination node. The telecommunications mesh network has one or more pre-cross-connected trails associated therewith that are subdivided into one or more subtrails. Subtrails that do not meet pre-determined conditions are discarded. A logical graph representation of the telecommunications mesh network is created from subtrails that have not been discarded. Unused, shortcut, and rival edges are inserted into the logical graph. A shortest admissible protection path from the source node to the destination node is identified from the logical graph.

Method for allocating protection bandwidth in a telecommunications mesh network

A communication system () comprises a first network () including a source () arranged to transmit data and a second network () including a destination () arranged to receive the data. Interruptions in communication between the source and destination are reduced by providing a first primary node () and a first secondary node () in the first network (), and a second primary node () and a second secondary node () in the second network (). First and second sets of primary routes (and) and secondary routes (and) are provided within the first and second networks to facilitate delivery of data to various nodes.

Inter-working mesh telecommunications networks

An apparatus to take aseptic samples from bioreactors or other aseptic or sterile containers is disclosed. The invention comprises a hollow cannula (20), a septum (28) which seals a pre-sterilized sample tube (27) and an ultraviolet lamp (22). The cannula is connected to a bioreactor which is to be sampled. The ultraviolet lamp is used to produce light which will sterilize the surface of the septum and cannula prior to sampling, thus maintaining asepsis of both the bioreactor and the sample.

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Quincy, MA, United States of America

Timothy Y Chow