ATTO Technology FibreBridge 4500C, Инструкция по установке и эксплуатации

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42
In-band
C
L
I
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)
➔
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.
Exhibit 4.4-1 The SCSI command process: reserve the FibreBridge, send the command, release the FibreBridge.
Initiator/Host FibreBridge
Goal : reserve the FibreBridge for an in-band CLI command
SCSI cdb: Reserve ServicesLUN =>
<= SCSI success
Goal : retrieve the FibreBridge temperature via in-band CLI
1. Issue the command:
SCSI cdb: WriteBuffer ServicesLUN, bid=0, “get Temperature\n” => places “Temperature=28C\n\r” into the
read-data buffer
<= SCSI success
2. Retrieve the results:
SCSI cdb: ReadBuffer ServicesLUN, bid=0 =>
<= Returns “Temperature=28C\n\r” from the
read-data buffer
<= SCSI success
Goal : release the FibreBridge for other in-band users
SCSI cdb: Release ServicesLUN =>
<= SCSI success