Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2011-08-02
2011-08-02
Yao, Kwang B (Department: 2473)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395530, C370S409000, C370S474000, C370S475000, C709S236000, C398S043000
Reexamination Certificate
active
07990975
ABSTRACT:
A fibre channel switch element and method for routing fibre channel frames is provided. The switch element includes a receive segment that can add a virtual storage area network (“VSAN”) tagging header to frames that are received by the receive segment; and strip the VSAN tagging header before frames are sent to ports that do not support virtual fabric capability. The receive segment includes a table used for matching fabric extension parameters. An incoming frame's VSAN identity value is compared to a control word entry to generate a value used for routing the incoming frame. The table is used to determine if a frame is part of a virtual fabric. The routing table for each port is used to route frames and the routing table includes entries for supported virtual fabrics.
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Dropps Frank R.
Kohlwey Ernest G.
Papenfuss Gary M.
Ross Edward C.
Verba Craig M.
Klein O'Neill & Singh, LLP
QLOGIC Corporation
Rutkowski Jeffrey
Yao Kwang B
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