> I understand the concept of Classes of Serivce but my question is how
> many, and, what are they as there is lack of consistency amongst sites
> and publications.
>
> Here's a sampling:
>
>
http://itpapers.zdnet.com/abstract....=comp&docid=511[vbc
ol=seagreen]
> Class 1, Class 2 and Class 3
>
> http://nepp.nasa.gov/photonics/phot...ibrechannel.htm
> Class 1, Class 2, Class 3 and Intermix Class
>
> Building SANS with Brocade; Beauchamp, Judd and Kuo
> Class 1, Class 2, Class 3, Class 4 and Class F
>
> Storage Area Network Fundamentals; Gupta
> Class 1, Class 2, Class 3, Class 4, Class 5 and Class 6
>[/vbcol]
Guess that lack of consistency is due to the time of  edition (class 4-6
definitions
are newer) and due to vendor specific influence (class F is only Brocade
internal communication Protocoll for Inter Switch Links (ISLs)).

BTW, I'm wondering why there is class 1 and 4 in that Brocade book `cause
they only support class2, 3 and F.

Rene

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