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:
Dec. 05, 2006
Filed:
Jan. 10, 2002
Chih-chiang Lee, Chang-Hua, TW;
Fuh-jang Lin, Hsinchu, TW;
Chih-Chiang Lee, Chang-Hua, TW;
Fuh-Jang Lin, Hsinchu, TW;
Action Technology Corporation, Hsinchu, TW;
Abstract
A redundant link management switch for use in a stack of switches forming a closed-loop link topology, including a stacking module, a processor and a management module. The stacking module has an uplink port for connecting a next-higher switch in the stack and a downlink port for connecting a next-lower switch in the stack. The processor instructs the stacking module to disable a downlink control bus within the downlink port when receiving a disconnect command, and instructs the stacking module to enable the downlink control bus when receiving a reconnect command. The management module asserts the disconnect command if a link status, received from the processor, indicates that the redundant link management switch and the stack of switches are stacked into the closed-loop link topology. Additionally, the management module asserts the reconnect command to recover a redundant link if the management module detects that the closed-loop link topology is changed.