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:
May. 30, 2006
Filed:
Oct. 16, 2000
Mats Lindblom, Johanneshov, SE;
Hans Berghager, Älvsjö, SE;
Per Sydhoff, Stockholm, SE;
Mikael Kundel, Årsta, SE;
Astrid Berglund, Skarpnäck, SE;
Mats Lindblom, Johanneshov, SE;
Hans Berghager, Älvsjö, SE;
Per Sydhoff, Stockholm, SE;
Mikael Kundel, Årsta, SE;
Astrid Berglund, Skarpnäck, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A change of switch plane operation is performed in a multi-plane cell switching node () which has a first switch plane (); a second switch plane (); and plural switch port interface units (). In response to detection of a fault in the active switch plane, the passive switch plane sends a plane change cell to the plural switch port interface units, and stops egress traffic flow from the second switch plane. Upon receiving the plane change cell, each switch port interface unit redirects traffic cells sent from the active plane to the passive switch plane. Each switch port interface unit then determines when traffic cells destined thereto have been flushed from the first switch plane, and changes its active switch plane designation (so that the formerly passive switch plane becomes the active switch plane) so that egress traffic flow can begin from the formerly passive (now active) plane to the respective switch port interface units.