Bill W Lin

US Patent:

7860004, Dec 28, 2010

Filed:

Jul 25, 2008

Appl. No.:

12/180309

Inventors:

Oliver Spatscheck - Randolph NJ, US
Subhabrata Sen - N. Providence NJ, US
Bill Lin - La Jolla CA, US
Jerry Chou - San Diego CA, US

Assignee:

AT&T Intellectual Property I, LP - Reno NV

International Classification:

H04J 3/14
H04L 12/26
H04L 12/28
G06F 11/30

US Classification:

370231, 370236, 370241, 370252, 370255, 709224, 726 7

Abstract:

A system for protecting a network from a traffic surge includes a data collection module, an allocation module, and a traffic flow module. The data collection module is configured to obtain network utilization information for a plurality of traffic flows. The allocation module is configured to determine a bandwidth allocation to minimize a drop probability for the plurality of traffic flows. The traffic flow module is configured to preferentially drop network packets for a traffic flow exceeding the optimal bandwidth allocation.

US Patent:

8443444, May 14, 2013

Filed:

Nov 18, 2009

Appl. No.:

12/621212

Inventors:

Jia Wang - Randolph NJ, US
Chia-Wei Chang - San Diego CA, US
Seungjoon Lee - Basking Ridge NJ, US
Bill Lin - La Jolla CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

G06F 11/00

US Classification:

726 23, 370401, 359167

Abstract:

A method includes determining, at a network routing device, an average packet drop rate for a plurality of aggregations of packet flows. The method also determines a threshold packet drop rate based on the average packet drop rate, a current packet drop rate for a select aggregation of the plurality of aggregations, and whether at least one packet flow of the select aggregation is potentially subject to a denial-of-service attack based on a comparison of the current packet drop rate to the threshold packet drop rate.

US Patent:

20100020687, Jan 28, 2010

Filed:

Jul 25, 2008

Appl. No.:

12/180308

Inventors:

Oliver Spatscheck - Randolph NJ, US
Bill Lin - La Jolla CA, US
Jerry Chou - San Diego CA, US
Subhabrata Sen - N. Providence NJ, US

Assignee:

AT&T CORP. - New York NY

International Classification:

H04L 12/24

US Classification:

370235

Abstract:

A system for protecting a network from a traffic surge includes a data collection module, an allocation module, and a traffic flow module. The data collection module is configured to obtain network utilization information for a plurality of traffic flows. The allocation module is configured to determine an optimal bandwidth allocation for each of the plurality of traffic flows. The traffic flow module is configured to preferentially drop network packets for a traffic flow exceeding the optimal bandwidth allocation.