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:
Feb. 22, 2011
Filed:
Mar. 15, 2007
Cecilia Martin, Morgan Hill, CA (US);
John Huber, San Diego, CA (US);
Mei Wang, Mountain View, CA (US);
Jonathan Chang, Cupertino, CA (US);
Flavio Bonomi, Palo Alto, CA (US);
Sumeet Singh, Fremont, CA (US);
Cecilia Martin, Morgan Hill, CA (US);
John Huber, San Diego, CA (US);
Mei Wang, Mountain View, CA (US);
Jonathan Chang, Cupertino, CA (US);
Flavio Bonomi, Palo Alto, CA (US);
Sumeet Singh, Fremont, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A device includes a multistage filter and an elephant trap. The multistage filter has hash functions and an array. The multistage filter is operable to receive a packet associated with a candidate heavy network user and send the packet to the hash functions. The hash functions generate hash function output values corresponding to indices in the array. The elephant trap is connected to the multistage filter. The elephant trap includes a buffer and probabilistic sampling logic. The probabilistic sampling logic is operable to attempt to add information associated with the packet to the buffer a particular percentage of the time based in part on the result of the multistage filter lookup. The buffer is operable to hold information associated with the packet, counter information, and timestamp information.