Robert A Colvin

US Patent:

7978607, Jul 12, 2011

Filed:

Mar 26, 2009

Appl. No.:

12/412290

Inventors:

Mitri Halabi - San Jose CA, US
Yuen Fai Wong - San Jose CA, US
Robert Colvin - San Jose CA, US
Frank S. Yang - Cupertino CA, US

Assignee:

Brocade Communications Systems, Inc. - San Jose CA

International Classification:

H04J 1/16

US Classification:

370235, 370229, 370230, 3702301, 370231, 370236, 370414, 370418

Abstract:

Congestion control techniques based upon resource utilization information stored by a network device. According to an embodiment of the present invention, a network device is configured to identify a data source causing congestion based upon information stored by the network device identifying a set of data sources, and for each data source, information identifying the amount of a resource of the network device being used for processing data received by the network device from the data source.

US Patent:

8223642, Jul 17, 2012

Filed:

Apr 28, 2006

Appl. No.:

11/413409

Inventors:

David S. Curry - San Jose CA, US
Robert J. Colvin - San Jose CA, US
Samer I. Nubani - Santa Clara CA, US
Ravindra Sunkad - Pleasanton CA, US
Man-Tung T. Hsiao - Cupertino CA, US
Paul M. Hallinan - San Carlos CA, US
Rishi Mehta - San Jose CA, US
Sanjay Khanna - Fremont CA, US

Assignee:

Tellabs San Jose, Inc. - San Jose CA

International Classification:

H04L 12/56

US Classification:

370235, 3703954, 370412, 709234

Abstract:

Differentiated services for network traffic using weighted quality of service is provided. Network traffic is queued into separate per flow queues, and traffic is scheduled from the per flow queues into a group queue. Congestion management is performed on traffic in the group queue. Traffic is marked with priority values, and congestion management is performed based on the priority values. For example, traffic can be marked as “in contract” if it is within a contractual limit, and marked as “out of contract” if it is not within the contractual limit. Marking can also include classifying incoming traffic based on Differentiated Service Code Point. Higher priority traffic can be scheduled from the per flow queues in a strict priority over lower priority traffic. The lower priority traffic can be scheduled in a round robin manner.

US Patent:

20070206602, Sep 6, 2007

Filed:

Aug 8, 2006

Appl. No.:

11/463230

Inventors:

MITRI HALABI - San Jose CA, US
Sanjay Khanna - Fremont CA, US
Robert Colvin - San Jose CA, US
Rishi Mehta - San Jose CA, US

Assignee:

Tellabs San Jose, Inc. - Naperville IL

International Classification:

H04L 12/56

US Classification:

370395400

Abstract:

Differentiated service classes on a label switch path are managed by comparing at least one packet field value included in a packet of data to mapping field values of a mapping that correlates the mapping field values with queues. The packet is stored into one of the queues based on the comparing. A first subset of the queues is scheduled using a first queue scheduling algorithm and a second subset of the queues is scheduled using a second queue scheduling algorithm. The packet is transmitted onto the label switch path in accordance with a predefined scheduling order of the first subset of the queues and the second subset of the queues.

US Patent:

20110235518, Sep 29, 2011

Filed:

Jun 8, 2011

Appl. No.:

13/156145

Inventors:

Mitri Halabi - San Jose CA, US
Yuen Fai Wong - San Jose CA, US
Robert Colvin - San Jose CA, US
Frank S. Yang - Cupertino CA, US

Assignee:

Brocade Communications Systems, Inc. - San Jose CA

International Classification:

H04L 12/26

US Classification:

370237

Abstract:

Congestion control techniques based upon resource utilization information stored by a network device. According to an embodiment of the present invention, a network device is configured to identify a data source causing congestion based upon information stored by the network device identifying a set of data sources, and for each data source, information identifying the amount of a resource of the network device being used for processing data received by the network device from the data source.