304 Appendix
D
Interfaces
D.1.5 Frames
Frame Format
Table D.5 displays the frame format used with Fibre Channel.
Table D.5
Frame Format
Start of Frame
(SOF)
Frame Header
Data File
CRC
End of Frame (EOF)
4 bytes
24 bytes
0 to 2112 bytes
4 bytes
4 bytes
Start of Frame:
The Start of Frame (SOF) delimiter is an Ordered Set that immediately precedes the
frame context.
For the types of the SOF, refer to D.1.4).
Frame Header:
The Frame Header is used by the link control facility to control link operations, control
device protocol transfers, and detect missing or out of order frames.
Data Field:
This field can take the following size depending on the frame type. (Note)
Link control frame: Data Field length = 0.
Data frame: Data Field length = 0 to 2112.
The optional header (Note) may be supplied at the top of the Data Field of the data
frame.
The data described in the data frame is Data Field excluding the option header.
This portion is called payload.
Note:
The frame type and presence or absence of the optional header are prescribed by
the Frame Header.
CRC:
The CRC is the Cyclic Redundancy Check code for checking data in the Frame Header
and Data Field.
End of Frame:
The End of Frame (EOF) is a frame delimiter for identifying the end of a frame.
Summary of Contents for HDS AMS200
Page 1: ...MK 95DF713 03 Acer HDS AMS200 User and Reference Guide ...
Page 2: ......
Page 6: ...vi Preface ...
Page 9: ...Acer HDS AMS200 User and Reference Guide ix ...
Page 10: ......
Page 18: ...xviii Contents ...
Page 28: ...8 Chapter 1 Overview of the AMS200 Subsystem ...
Page 112: ...92 Chapter 4 Subsystem Architecture and Components ...
Page 128: ...108 Chapter 5 Functional and Operational Characteristics ...
Page 142: ...122 Chapter 6 Configuring the AMS200 Subsystem ...
Page 220: ...200 Chapter 7 Configuring Storage on the Thunder 9530 V Series Subsystem Ð ...
Page 224: ...204 Chapter 7 Configuring Storage on the Thunder 9530 V Series Subsystem ...
Page 227: ...Acer HDS AMS200 User and Reference Guide 207 ...
Page 248: ...228 Chapter 8 Troubleshooting Figure 8 11 NNC Information Screen ...
Page 292: ...272 Chapter 9 Periodic Maintenance ...
Page 294: ...274 Chapter 9 Periodic Maintenance ...
Page 300: ...280 Appendix B System Parameter Settings List ...
Page 328: ...308 Appendix D Interfaces ...