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. 16, 2010
Filed:
Oct. 31, 2002
Linghsiao Wang, Irvine, CA (US);
Rong-feng Chang, Irvine, CA (US);
Eric (Changhwa) Lin, Irvine, CA (US);
James Ching-shau Yik, Mission Viejo, CA (US);
Linghsiao Wang, Irvine, CA (US);
Rong-Feng Chang, Irvine, CA (US);
Eric (Changhwa) Lin, Irvine, CA (US);
James Ching-Shau Yik, Mission Viejo, CA (US);
Conexant Systems, Inc., Newport Beach, CA (US);
Abstract
A high availability backplane architecture. The backplane system includes redundant node boards operatively communicating with redundant switch fabric boards. Uplink ports of the node boards are logically grouped into trunk ports at one end of the communication link with the switch fabric boards. The node boards and the switch fabric boards routinely perform link integrity checks when operating in a normal mode such that each can independently initiate failover to working ports when a link failure is detected. Link failure is detected either by sending a link heartbeat message after the link has had no traffic for a predetermined interval, or after receiving a predetermined consecutive number of invalid packets. Once the link failure is resolved, operation resumes in normal mode.