Thomas M Skibo from Los Altos Hills, CA, age 59

Resumes

Thomas Skibo

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Location:

239 Twenty Row Rd, Colver, PA 15927

Industry:

Computer Networking

Us Patents

System, Apparatus, And Method For Increasing Resiliency In Communications
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US Patent:

7099352, Aug 29, 2006
Filed:

Jan 3, 2001
Appl. No.:

09/752828
Inventors:

Dennis C. Ferguson - Mountain View CA, US
Devereaux C. Chen - Cupertino CA, US
Ramesh Padmanabhan - Los Altos CA, US
Thomas Michael Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04J 3/06
US Classification:

370504, 370505
Abstract:

A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fill causes the receiving system to go into an erroneous state, the receiving system will be synchronized with the transmitting system before receiving valid data. In one embodiment, the transmitting system transmits data in packets over SONET. The packet data is scrambled at the transmitting end and descrambled at the receiving end. Runt abort packets sent during inter-frame time fill resynchronize the descrambler. If there is an error in the inter-frame time fill bytes, causing the receiving end descrambler to no longer be synchronized with the transmitting end scrambler, the runt abort packets will cause the descrambler to resynchronize state with the transmitting scrambler.

Packet Spraying For Load Balancing Across Multiple Packet Processors
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US Patent:

7382782, Jun 3, 2008
Filed:

Apr 12, 2002
Appl. No.:

10/120610
Inventors:

Dennis C. Ferguson - Palo Alto CA, US
Chi-Chung Chen - Cupertino CA, US
Thomas M. Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04L 12/56
US Classification:

37039541, 709105
Abstract:

A network device includes multiple packet processing engines implemented in parallel with one another. A spraying component distributes incoming packets to the packet processing engines using a spraying technique that load balances the packet processing engines. In particular, the spraying component distributes the incoming packets based on queue lengths associated with the packet processing engines and based on a random component. In one implementation, the random component is a random selection from all the candidate processing engines. In another implementation, the random component is a weighted random selection in which the weights are inversely proportional to the queue lengths.

System, Apparatus, And Method For Increasing Resiliency In Communications
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US Patent:

7570667, Aug 4, 2009
Filed:

Jul 13, 2006
Appl. No.:

11/457275
Inventors:

Dennis C. Ferguson - Mountain View CA, US
Devereaux C. Chen - Cupertino CA, US
Ramesh Padmanabhan - Los Altos CA, US
Thomas Michael Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04J 3/06
US Classification:

370504, 370503, 370505, 370506
Abstract:

A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fill causes the receiving system to go into an erroneous state, the receiving system will be synchronized with the transmitting system before receiving valid data. In one embodiment, the transmitting system transmits data in packets over SONET. The packet data is scrambled at the transmitting end and descrambled at the receiving end. Runt abort packets sent during inter-frame time fill resynchronize the descrambler. If there is an error in the inter-frame time fill bytes, causing the receiving end descrambler to no longer be synchronized with the transmitting end scrambler, the runt abort packets will cause the descrambler to resynchronize state with the transmitting scrambler.

Systems And Methods For Congestion Control Using Random Early Drop At Head Of Buffer
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US Patent:

7684422, Mar 23, 2010
Filed:

Jul 30, 2002
Appl. No.:

10/207008
Inventors:

Pradeep Sindhu - Los Altos Hills CA, US
Debashis Basu - San Jose CA, US
Sreeram Veeragandham - Sunnyvale CA, US
Jayabharat Boddu - Santa Clara CA, US
Thomas Michael Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04L 12/56
US Classification:

370412, 370389, 370230
Abstract:

A system selectively drops data from a queue. The system includes queues that temporarily store data, a dequeue engine that dequeues data from the queues, and a drop engine that operates independently from the dequeue engine. The drop engine selects one of the queues to examine, determines whether to drop data from a head of the examined queue, and marks the data based on a result of the determination.

Packet Spraying For Load Balancing Across Multiple Packet Processors
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US Patent:

7782782, Aug 24, 2010
Filed:

Apr 24, 2008
Appl. No.:

12/108713
Inventors:

Dennis C Ferguson - Palo Alto CA, US
Chi-Chung Chen - Cupertino CA, US
Thomas M Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04L 12/26
H04L 12/56
US Classification:

370235, 709225, 37039541
Abstract:

A network device includes multiple packet processing engines implemented in parallel with one another. A spraying component distributes incoming packets to the packet processing engines using a spraying technique that load balances the packet processing engines. In particular, the spraying component distributes the incoming packets based on queue lengths associated with the packet processing engines and based on a random component. In one implementation, the random component is a random selection from all the candidate processing engines. In another implementation, the random component is a weighted random selection in which the weights are inversely proportional to the queue lengths.

System, Apparatus, And Method For Increasing Resiliency In Communications
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US Patent:

7986717, Jul 26, 2011
Filed:

Jun 26, 2009
Appl. No.:

12/492967
Inventors:

Dennis C. Ferguson - Mountain View CA, US
Devereaux C. Chen - Cupertino CA, US
Ramesh Padmanabhan - Los Altos CA, US
Thomas Michael Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04J 3/06
US Classification:

370504, 370503, 370505, 370506
Abstract:

A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fill causes the receiving system to go into an erroneous state, the receiving system will be synchronized with the transmitting system before receiving valid data. In one embodiment, the transmitting system transmits data in packets over SONET. The packet data is scrambled at the transmitting end and descrambled at the receiving end. Runt abort packets sent during inter-frame time fill resynchronize the descrambler. If there is an error in the inter-frame time fill bytes, causing the receiving end descrambler to no longer be synchronized with the transmitting end scrambler, the runt abort packets will cause the descrambler to resynchronize state with the transmitting scrambler.

Systems And Methods For Congestion Control Using Random Early Drop At Head Of Buffer
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US Patent:

8072998, Dec 6, 2011
Filed:

Dec 10, 2009
Appl. No.:

12/635547
Inventors:

Pradeep Sindhu - Los Altos Hills CA, US
Debashis Basu - San Jose CA, US
Sreeram Veeragandham - Ann Arbor MI, US
Jayabharat Boddu - Santa Clara CA, US
Thomas Michael Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

H04L 12/56
US Classification:

370412, 370389, 370230
Abstract:

A system selectively drops data from a queue. The system includes queues that temporarily store data, a dequeue engine that dequeues data from the queues, and a drop engine that operates independently from the dequeue engine. The drop engine selects one of the queues to examine, determines whether to drop data from a head of the examined queue, and marks the data based on a result of the determination.

Packet Spraying For Load Balancing Across Multiple Packet Processors
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US Patent:

8416686, Apr 9, 2013
Filed:

Jul 21, 2010
Appl. No.:

12/840406
Inventors:

Dennis C. Ferguson - Palo Alto CA, US
Chi-Chung Chen - Cupertino CA, US
Thomas M. Skibo - Palo Alto CA, US
Assignee:

Juniper Networks, Inc. - Sunnyvale CA
International Classification:

G01R 31/08
US Classification:

370230, 37039541, 370394
Abstract:

A network device includes multiple packet processing engines implemented in parallel with one another. A spraying component distributes incoming packets to the packet processing engines using a spraying technique that load balances the packet processing engines. In particular, the spraying component distributes the incoming packets based on queue lengths associated with the packet processing engines and based on a random component. In one implementation, the random component is a random selection from all the candidate processing engines. In another implementation, the random component is a weighted random selection in which the weights are inversely proportional to the queue lengths.