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:
Aug. 16, 2011
Filed:
Jul. 31, 2008
Rodney S. Canion, West Lake Hills, TX (US);
Alexander I. Tomlinson, Austin, TX (US);
Rodney S. Canion, West Lake Hills, TX (US);
Alexander I. Tomlinson, Austin, TX (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Traffic flow rate limits are enforced in an Intrusion Prevention System (IPS) having a plurality of deep packet inspection (DPI) engines by using a floating token bucket scheme. The IPS includes a plurality of rate limiters which are associated with different classes (e.g., protocols) of traffic. A floating token bucket is associated with each rate limiter. The token bucket associated with a rate limiter is passed from DPI engine to DPI engine. Only the DPI engine currently in possession of the token bucket for a particular rate limiter is allowed to process traffic of the class associated with that rate limiter. A DPI engine is only allowed to process traffic associated with a token bucket in its possession if that token bucket is not empty. Use of such floating token buckets enforces rate limits for each traffic class across the multiple DPI engine.