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:
Nov. 11, 2003
Filed:
Apr. 29, 1999
Nicholas W. McKeown, Stanford, CA (US);
Costas Calamvokis, Mountain View, CA (US);
Shang-Tse Chuang, Redwood City, CA (US);
Steven Lin, Fremont, CA (US);
Rolf Muralt, Sunnyvale, CA (US);
Balaji Prabhakar, Palo Alto, CA (US);
Anders Swahn, Redwood City, CA (US);
Gregory Watson, Palo Alto, CA (US);
PMC-Sierra, Inc., Burnaby BC, CA;
Abstract
A packet-switch system utilizes a linecard-to-switch (LCS) protocol to integrate linecards with a switch core. Since the linecards include a majority of the buffering of the system and are located physically away from switch core, the size of the switch core can be reduced in size. The LCS protocol is a label-swapping, credit-based, flow-control, which enables the system to operate without requiring such information as the number of port modules available within a switch core or what Qualities of Service (QoS) or multicast flows are available. In addition, the LCS protocol enables the linecards to contain and manage the majority of the buffers in the system, and also to control the data drop policy within the system.