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. 22, 2008
Filed:
Feb. 28, 2001
Gary S. Muntz, Lexington, MA (US);
Gary S. Muntz, Lexington, MA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A multi-port line card redundancy technique automatically reconfigures ports on line cards of an intermediate network node, such as an aggregation router, in the event of a failure to one of the ports. The technique includes a circuit that automatically enables one of a pair of line cards to assume responsibility for transmission and reception of data in the event of a failure to one of the ports of a line card. Each line card is preferably a multi-port line card having a plurality of ports. The line cards are preferably further organized and arranged into redundant pairs. The redundancy technique is preferably directed to '1+1' redundancy wherein an external device, such as an end station, transmits identical data over two connections to the redundant line cards of the router.