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:
Apr. 06, 2004
Filed:
Nov. 29, 2000
Keith Arroyo, Austin, TX (US);
Crossroads Systems, Inc., Austin, TX (US);
Abstract
A method and system are disclosed for processing a unit attention signal from a target device in a Fiber Channel-to-SCSI network having a plurality of Fiber Channel hosts. One embodiment of the method includes the steps of, in a router: (a) receiving a first command for said target device from a first one of said Fiber Channel hosts; (b) forwarding said first command to said target device; (c) determining, at said target device, if said target device has undergone a status changing event since last receiving any command; (d) if said target device has undergone such a status changing event, then; (1) at said target device, issuing said UA signal in response to said first command; (2) forwarding said UA signal to said router and caching said UA signal at said router; (3) updating a register for said target device to indicate said UA signal is outstanding; (4) forwarding said UA signal to said first host and updating a UA table to indicate said UA signal has been forwarded to said first host; and (e) repeating steps (a)-(d) for a subsequent command from any of said Fiber Channel hosts, wherein said first command is said subsequent command and wherein said first host is the issuing host.