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:
Mar. 02, 2010
Filed:
May. 02, 2003
Daniel E. Klausmeier, Los Gatos, CA (US);
Edward Sprague, Woodside, CA (US);
Daniel E. Klausmeier, Los Gatos, CA (US);
Edward Sprague, Woodside, CA (US);
Ciena Corporation, Linthicum, MD (US);
Abstract
A distribution stage is disclosed comprising a plurality of inputs coupled to a plurality of first stage switching devices, a plurality of outputs coupled to a plurality of second stage switching devices, and a distribution configuration. The distribution configuration is configured to receive a plurality of bandwidth units (BU's) from each first stage switching device, and to distribute at least one BU from each first stage switching device to each second stage switching device, such that each second stage switching device is assured of receiving at least one BU from each first stage switching device. In effect, the distribution stage ensures that each first stage switching device has a logical link to each second stage switching device. In one embodiment, the distribution stage is configured in accordance with a distribution configuration that is static. Because the distribution configuration of the distribution stage is static, it does not add complexity to the overall switching determination of a switching network. Thus, the distribution stage enables the switching network to be expanded without degrading the switching performance of the network.