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:
Jun. 07, 2005
Filed:
Sep. 01, 2000
Yao-min Chen, San Jose, CA (US);
Heeloo Chung, San Francisco, CA (US);
Yao-Min Chen, San Jose, CA (US);
Heeloo Chung, San Francisco, CA (US);
Force10 Networks, Inc., Milpitas, CA (US);
Abstract
Methods and apparatus for an improvement on Random Early Detection (RED) router congestion avoidance are disclosed. A traffic conditioner stores a drop probability profile as a collection of configurable profile segments. A multi-stage comparator compares an average queue size (AQS) for a packet queue to the segments, and determines which segment the AQS lies within. This segment is keyed to a corresponding drop probability, which is used to make a packet discard/admit decision for a packet. In a preferred implementation, this computational core is surrounded by a set of registers, allowing it to serve multiple packet queues and packets with different discard priorities. Each queue and discard priority can be keyed to a drop probability profile selected from a pool of such profiles. This provides a highly-configurable, inexpensive, and fast RED solution for a high-performance router.