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. 15, 2008
Filed:
Apr. 24, 2003
Huan-wen Chen, Yunlin, TW;
Fuh-jang Lin, Hsinchu, TW;
Huan-Wen Chen, Yunlin, TW;
Fuh-Jang Lin, Hsinchu, TW;
Accton Technology Corporation, Hsinchu, TW;
Abstract
A stackable switch supporting redundant link and backup management. The stackable switch includes a stacking module, a processor and a management module. Several stackable switches can be stacked together in the form of a closed-loop link topology via the stacking module. The stacking module has an uplink port, a downlink port, and preferably a manual control device. The processor instructs the stacking module to enable or disable a downlink control bus within the downlink port when receiving a reconnect/disconnect command. If a link status, generated from the processor, indicates that these switches are stacked into the closed-loop link topology, the management module issues the disconnect command. Otherwise, the management module issues the reconnect command to recover a redundant link. Provided that the manual control device is activated, the management module in the same switch has the highest priority to become a master agent for the switch stack.