AUTOMATIC TESTING OF REDUNDANT SWITCHING ELEMENT AND AUTOMATIC SWITCHOVER

Title:

AUTOMATIC TESTING OF REDUNDANT SWITCHING ELEMENT AND AUTOMATIC SWITCHOVER

Document Type and Number:

WIPO Patent Application WO2002082230

Kind Code:

A3

Abstract:

A non-disruptive, on-line testing and switchover method and apparatus in a high availability, fibre channel switching environment. In a network having an active switching element (25), a redundant switching element (30) and a port (10), one aspect of the present invention provides for verifying a working data path (55) from the port to the redundant switching element, and thereafter verifying a working control path (75) to the redundant switching element. Both verification tests take place without interrupting operation on the network. In addition, another aspect of the present invention provides for recognizing a failure occurrence in the active switching element, and thereafter switching to the redundant switching element with the potential for minimal frame loss.

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Inventors:

LAY SAMUEL C
NESLSON JEFFREY J
RODGERS JAMES
JESSOP KENNETH

Application Number:

PCT/US2002/000339

Publication Date:

December 19, 2002

Filing Date:

January 07, 2002

Export Citation:

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Assignee:

MCDATA CORP (US)

International Classes:

H04L12/24; H04L12/26; (IPC1-7): H04J14/08

Foreign References:

US5490007A	1996-02-06
US5740157A	1998-04-14
US5848227A	1998-12-08

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