Lun Interpretations; Fc-Ae-Fclp; Scsi Data Integrity Field (T10-Dif) - Viavi Xgig User Manual

Decode Switches
•
Processor Type Devices (SPC-2)
Select this option if your network only uses Processor Type Devices (SPC-2).
• Automation/Drive Interface Devices (ADC)
Select this option if your network only uses automation/drive interface devices (ADC).
• Multi-Media Drives (MMC)
Select this option if your network only uses multi-media drives, such as CD and DVD.
•
Simple Streaming Protocol (FC-AV)
Decode the Send command FCP_DATA IUs as the Simple Streaming protocol. The Simple
Streaming protocol contains the Play, Pause, Resume, etc. commands to control the video
transfers over the network. The Simple Streaming protocol messages are carried by SCSI-3
into Send FCP_DATA IUs.

LUN Interpretations

This option sets the interpretation of the LUN structure to either
Assume Hierarchical Addressing for LUNs

FC-AE-FCLP

FC-AE-FCLP is one of the 5 sub-protocols for FC-AE. FC-AE-FCLP is implemented through
Vendor Specific SCSI Opcodes. By default, FC-AE-FCLP is disabled in the TraceView
application. You can enable it using the switch
You can disable it using the switch

SCSI DATA Integrity Field (T10-DIF)

The SCSI Block Device protocol specification (SBC-3) defines a protection information model to
protect the data from malicious and unintentional corruption. Under that model, the SCSI data
frames contain some Data Integrity fields (DIF) at a fixed interval within the data. The interval is
typically either 512-bytes or 4096 bytes.
•
512-Byte Blocks ending with Guard/App/Ref Tag
T10 Data Integrity Fields (T10-DIF) in the SCSI Data frames for Fibre Channel and SAS.
There are 3 data integrity fields for a total of 8 bytes: 2-byte Logical Block Guard, 2-byte
Logical Block Application Tag and 4-byte Logical Block Reference Tag. These DIF fields are
decoded in the SCSI data frame following each 512-byte block of data.
• 4096-Byte Blocks ending with Guard/App/Ref Tag
T10 Data Integrity Fields (T10-DIF) in the SCSI Data frames for Fibre Channel and SAS.
There are 3 data integrity fields for a total of 8 bytes: 2-byte Logical Block Guard, 2-byte
Logical Block Application Tag and 4-byte Logical Block Reference Tag. These DIF fields are
decoded in the SCSI data frame following each 4096-byte block of data.
• No T10-DIF Protection
(T10-DIF). This is the default switch.
Xgig Analyzer User's Guide
Chapter 17, Annotated Traces, Expert Traces, and Decode Switches
.
Enable FC-AE-FCLP As Vendor SCSI Opcodes
Disable FC-AE-FCLP
: This switch disables the decoding of the T10 Data Integrity Fields
Assume Single Level LUNS
.
: This switch enables the decoding of the
: This switch enables the decoding of the
or
.
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