Specifications

38
Interfaces: in-band CLI
I/O details
The buffer sent to the Services LUN during the
data out phase of a
Write Buffe r command must
be
• ASCII data
• maximum 80 bytes length
• terminated with either a carriage return
character (0x0D), line feed character (0x0A) or
NULL character (0x00)
• Characters following the first carriage return
character, line feed character or NULL character
are ignored.
The buffer retrieved from the Services LUN
during the data-in phase of a Read Buffer
command will be
• ASCII data
• maximum 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 2.4-1 The SCSI command process: reserve the FibreBridge, send command, release the bridge.
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
SerialPortBaudRate\n”
=> places “SerialPortBaudRate=9600\n\r” into
the read-data buffer
<= SCSI success
2. Retrieve the results:
SCSI cdb: ReadBuffer ServicesLUN, bid=0 =>
<= Returns “SerialPortBaudRate=9600\n\r”
from the read-data buffer
<= SCSI success
Goal : release the FibreBridge for other in-band users
SCSI cdb: Release ServicesLUN =>
<= SCSI success