Switch for implementing read only zones in a fibre channel...

Details Switch for implementing read only zones in a fibre channel... Switch for implementing read only zones in a fibre channel...

2007-10-02

2007-10-02

Ho, Duc (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S466000

Reexamination Certificate

active

10637732

ABSTRACT:
The Switch includes a port configured to receive a command frame when installed in a switching Fabric. The frame identifies a source device and a destination device in the Switching Fabric, a command, and a read/write flag which indicates if the identified source intends to exercise read-only or write access to the destination device. The Switch also includes a processor coupled to the port. The processor is configured to trap the frame and prevent it from reaching the defined destination device in the switching Fabric if both the source and destination devices are in a read-only zone and the flag indicates that the source intends to write to the destination device. In this manner, read-only zones can be implemented in the Switching Fabric.

REFERENCES:
patent: 4734884 (1988-03-01), Kohno et al.
patent: 6330648 (2001-12-01), Wambach et al.
patent: 6516999 (2003-02-01), Belonozik
patent: 2002/0176433 (2002-11-01), Zhu et al.
patent: 2002/0176434 (2002-11-01), Yu et al.
patent: 2004/0218593 (2004-11-01), Hammons et al.
International Search Report from corresponding PCT application PCT/US2004/021339, mailed Jan. 4, 2005.
Written Opinion from corresponding PCT application PCT/US2004/021339, mailed Jan. 4, 2005.

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