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:
Jan. 03, 2006
Filed:
Apr. 12, 2002
David Joseph Jones, Ottawa, CA;
Douglas Heath Patriarche, Ottawa, CA;
David Joseph Jones, Ottawa, CA;
Douglas Heath Patriarche, Ottawa, CA;
Tropic Networks Inc., Kanata, CA;
Abstract
A method and apparatus are provided for improving redundancy and load sharing in control cards in the control plane of a communication node. An active control card which receives a request passes the request to the inactive control card for processing if and only if the inactive control card is synchronized with the active control card and the inactive control card is able to process the request. Redundancy and load sharing are further improved if the active control card separates the processing of managing the request and the determination of a response to the request onto separate processors on the control card. In one embodiment, the control cards are OSPF modules in a router. Redundancy is effected by more accurately synchronizing the link state database of each OSPF module, and by allowing the state of each neighboring router to be determined only by the active OSPF module and not independently by any inactive OSPF module.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile