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:
Aug. 18, 2009
Filed:
May. 26, 2006
Srihari Varada, Shelton, CT (US);
Michael Singngee Yeo, Shelton, CT (US);
Diego Marty, Leuk-Stadt, CH;
Timothy M. Shanley, Orange, CT (US);
Srihari Varada, Shelton, CT (US);
Michael Singngee Yeo, Shelton, CT (US);
Diego Marty, Leuk-Stadt, CH;
Timothy M. Shanley, Orange, CT (US);
Transwitch Corporation, Shelton, CT (US);
Abstract
An apparatus for fast failure switch over in an ETHERNET switch includes redundant switch (trunk) ports (a main and a backup) and hardware and software logic for redirecting traffic to the backup port when the main port (or the link associated with it) fails. The switchover is immediate and is based on the content of a local status register which indicates the port (link) status. Thus, frames addressed to the dead port are redirected to the backup port and few frames are lost. The STP function may proceed concurrently and eventually no more frames are addressed to the dead port.