Qlogic Corporation

Norman Chan

Rexford Alan Hill

William Clinton Terrell

Jean Kodama

Tracy Edmonds

Harun Muliadi

Stephen How

Michael Nishimura

Wayland Joeng

Eric Russell Peterson

A router for use in a network includes a scalable architecture and performs methods for implementing quality of service on a logical unit behind a network port; and for implementing storage virtualization. The architecture includes a managing processor, a supervising processor; and a plurality of routing processors coupled to a fabric. The managing processor has an in-band link to a routing processor. A routing processor receives a frame from the network, determines by parsing the frame, the protocol and logical unit number, and routes the frame to a queue according to a traffic class associated with the logical unit number in routing information prepared for the processors. An arbitration scheme empties the queue in accordance with a deficit round robin technique. If a routing processor detects the frame's destination is a virtual entity, and so is part of a virtual transaction, the router conducts a nonvirtual transaction in concert with the virtual transaction. The nonvirtual transaction accomplishes the intent of the virtual transaction but operates on an actual network port, for example, a storage device.

Router with routing processors and methods for virtualization

Router and methods for distributed virtualization

Router and methods using network addresses for virtualization

Growing community of inventors

Diamond Bar, CA, United States of America

Norman Chan