2.4. FC-2: Framing Protocol
The FC-2 framing protocol manages flow control so data will be delivered with no collisions or loss. This level defines the signaling protocol, including the frame and byte structure, which is the data transport mechanism used by Fibre Channel. The framing protocol is used to break sequences into individual frames for transmission, flow control, 32-bit CRC generation, and various classes of service.
To aid in data transfer, FC-2 provides for the following elements:
Frames— basic units of information transfer. The maximum payload of a frame is 2112 bytes.
Sequences— are made up of one or more frames. FC-2 names each sequence and tracks it to completion.
Exchanges— are the largest construct understood by FC-2. An exchange ...
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