The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2008
Filed:
Apr. 26, 2002
Anat Bremler-barr, Holon, IL;
Dan Touitou, Ramat-Gan, IL;
Keren Horvitz, Hod Hasharon, IL;
Rephael Tzadikario, Kefar Sava, IL;
Yehuda Afek, Hod-HaSharon, IL;
Anat Bremler-Barr, Holon, IL;
Dan Touitou, Ramat-Gan, IL;
Keren Horvitz, Hod Hasharon, IL;
Rephael Tzadikario, Kefar Sava, IL;
Yehuda Afek, Hod-HaSharon, IL;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
An improved network device that controls throughput of packets received thereby, e.g., to downstream devices or to downstream logic contained within the same network device. The network device comprises a scheduler that schedules one or more packets of a selected class for throughput as a function of a weight of that class and weights of one or more other classes. The weight of at least the selected class is dynamic and is a function of a history of volume of packets received by the network device in the selected class. An apparatus for protecting against overload conditions on a network, e.g., of the type caused by DDoS attacks, has a scheduler and a token bucket mechanism, e.g., as described above. Such apparatus can also include a plurality of queues into which packets of the respective classes are placed on receipt by the apparatus. Those packets are dequeued by the scheduler, e.g., in the manner described above, for transmittal to downstream devices (e.g., potential victim nodes) on the network.