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Static device addressing presents internal devices and external SCSI devices as a Fibre Channel LUN
to a host. All ports on the FibreBridge use the same Fibre Channel node name, but each port has a
unique Fibre Channel port name.
The ATTO FibreBridge allows parallel SCSI
devices to participate in a Fibre Channel
arbitrated loop or on a fabric. Fibre Channel and
parallel SCSI use different models to address
devices. The FibreBridge translates between these
addressing models.
AddressMap C is a CLI command which uses
static device addressing rather than route mapping
to present internal devices and external SCSI
devices as a Fibre Channel LUN to a host. All
ports on the FibreBridge use the same Fibre
Channel node name, but each port has a unique
Fibre Channel port name.
The FibreBridge appears as a single Fibre
Channel device. All devices are available on the
Fibre Channel port at the same LUN as follows
Peripheral Device Addressing (internal FB LUNs)
BIT
7
6
LUN BYTE 0
0
0
LUN BYTE 1
Logical Device Addressing (external SCSI devices)
Bit
7
6
LUN BYTE 0
1
0
LUN BYTE 1
Bus
71
ATTO Technology Inc. FibreBridge Installation and Operation Manual
3.1.2 Static device addressing
5
4
3
2
1
Bus Identifier
Target/LUN
5
4
3
2
1
Target
LUN
Exhibit 3.1-3 Sample mappings for AddressMap C
Internal Device:
FibreBridge LUN
Services LUN
SCSI Device:
Bus Targe
0
0
0
1
2
3
The Fibre Channel port will report a particular
device (both internal and SCSI) at the same LUN.
The LUNs reported to a host in response to a
ReportLUNs command will always contain both
the FibreBridge and Services target LUN and the
0
SCSI devices currently attached to the
FibreBridge.
Several commands and features are not available
0
in AddressMap C mode: AutoMap,
FibreBridgeTargetLUN, ServicesLUN,
Route, RouteDisplay, RouteChange,
RouteOnline, RouteOffline, SpeedWrite,
SpeedWriteDefault.
FC LUN
0x0000
0x0001
LUN FC LUN
t
0
0
0x8000
1
0
0x8100
2
1
0x8201
0
0
0x8020
3
0
0x8340
5
2
0x8562
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