FC-2:
Only FC-2 frames have a header, so these fields are not available for FC-1 frames.
Defines the framing rules and mechanisms for controlling the different service classes. The following building blocks are
defined by the standard:
Ordered Set
Frame
Sequence
Exchange
Protocol
FC-2 Frame Structure
FC-2 Header
The FC-2 header is only 24 bytes long. Header settings do not affect the transmission or reception
of the FC-2 frame.
Understanding the Basic Test Channel Frame Structure
The Fibre Channel standard defines a variable frame length consisting of 36 bytes of overhead and up to 2112 bytes of payload for a
total maximum size of 2148 bytes.
SOF and EOF
A Start of Frame (SOF) delimiter and End of Frame (EOF) delimiter mark the beginning and end of each Fibre Channel
frame
Available for both FC-1 and FC-2 frame formats
Frame Header
Is the first field of the frame content and immediately follows the SOF delimiter and is transmitted on a word boundary
Is used to control link operations and device protocol transfers as well as detect missing or out of order frames
Available in FC-2 frame format only
CRC
- The Cyclic Redundancy Check (CRC)
Is a four byte field that follows the Data Field and is used to verify the data integrity of the Frame Header and Data Field
SOF and EOF delimiters are not included in the CRC verification
RXT-3900 e-Manual D07-00-111P Rev A00
Summary of Contents for RXT3900
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