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The buffer retrieved from the Services LUN
during the data-in phase of a Read Buffer
command will be:
➔ ASCII data
➔ 8 KBytes (8192 bytes) in length
➔ terminated with a NULL character (0x00)
Exhibit 8.2-1 The SCSI command process: reserve the FibreBridge, send the command, release the FibreBridge.
Initiator/Host
Goal: reserve the FibreBridge for an in-band CLI command
SCSI cdb: Reserve ServicesLUN
Goal: retrieve the FibreBridge temperature via in-band CLI
1. Issue the command:
SCSI cdb: WriteBuffer ServicesLUN, bid=0, "get Temperature\n"
2. Retrieve the results:
SCSI cdb: ReadBuffer ServicesLUN, bid=0
Goal: release the FibreBridge for other in-band users
SCSI cdb: Release ServicesLUN
➔ Characters following the NULL character
are meaningless.
A CHECK_CONDITION,
INVALID_PARAMETER_IN_CDB will be
returned to an initiator that specifies an incorrect
Buffer ID, Mode, Length or Buffer Offset. The
Mode is always Data (0x2), the Buffer ID is
always 0 and the Buffer Offset is always 0.
FibreBridge
=>
<=
SCSI success
=>
places "Temperature=28C\n\r" into the
read-data buffer
<=
SCSI success
=>
<=
Returns "Temperature=28C\n\r" from the
read-data buffer
<=
SCSI success
=>
<=
SCSI success
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