Fibre Channel Layers

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FC-0 Lowest layer on fibre channel transport; represents the physical media.
FC-1 this layer contains the 8b/10b encoding scheme.
FC-2 this layer handles framing and protocol, frame format, sequence/exchange management, and ordered set usage.
FC-3 this layer contains common services used by multiple N_Ports in a node.
FC-4 this layer handles standards and profiles for mapping upper-level protocols such as SCSI and IP onto the Fibre Channel.

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