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Technology Stocks : The New QLogic (ANCR)
QLGC 16.070.0%Aug 24 5:00 PM EST

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To: George Dawson who wrote (10630)10/1/1997 8:41:00 AM
From: Craig Stevenson   of 29386
 
George,

I got side-tracked a bit by some interesting information. Did you know that there are several classes of Fibre Channel that we haven't mentioned? I got this information from a document titled, "Fibre Channel Physical And Signalling Interface - 3 (FC-PH-3) Rev 9.2", dated June 2, 1997

Class 1 (Buffered) - "Buffered Class 1 extends Class 1 Service to allow N_Ports of differing data rates to establish and make use of Class 1 Service."

Class 4 (Fractional) - "Class 4 Service is a connection oriented service for use with a Fabric. This is an optional service allowing the establishment of a Class 4 circuit between a pair of communicating N_Ports. The Class 4 circuit provides a fractional allocation of the resources of the path between the N_Ports."

Class 6 (Uni-Directional Dedicated Connection) - "Class 6 is a service which provides Dedicated Connections for Reliable multicast (see clause 31) for a Fabric topology."

I have no idea what happened to Class 5. <g>

Also of interest is that a couple of familiar names appear on the list of people who worked to develop this standard, "T. Anderson" and "R. Cornelius".

Craig
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