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:
Apr. 18, 2000
Filed:
Nov. 26, 1997
Brian M Bass, Apex, NC (US);
Jim P Ervin, Raleigh, NC (US);
Douglas Ray Henderson, Raleigh, NC (US);
Edward Hau-chun Ku, Cary, NC (US);
Joseph Kinman Lee, Raleigh, NC (US);
Scott J Lemke, Raleigh, NC (US);
Joseph M Rash, Wake Forest, NC (US);
Loren Blair Reiss, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system are provided for traffic shaping and bandwidth scaling in a high speed internetworking device. A slot time wheel mechanism is provided for traffic rate control and a credit/debit mechanism is provided for traffic shaping and scaling. The high speed traffic scaler and shaper incorporates a programmable slot time wheel, a traffic scaler state machine, a traffic shaper parameter table and a traffic scaler processor. The traffic scaler processor incorporates a traffic queue allocation manager, a queue priority arbiter, a port enable selector, a port priority arbiter and a DMA channel arbiter. The traffic queue allocation manager and the queue priority, port priority and DMA channel arbiters are each controlled by a corresponding state machine. The parameters in the traffic shaper parameter table are dynamically updated for each logical queue and are used to enable the credit/debit mechanism.