ATTO Technology FibreBridge 4500C User manual

ATTO Technology Inc.
ATTO FibreBridge
TM
4500C/R/D
Installation and Operation Manual
© 2003 ATTO Technology, Inc. All rights reserved. All brand or product names are trademarks of their respective
holders. No part of this manual may be reproduced in any form or by any means without the express written
permission of ATTO Technology, Inc.
10/03 Document Control Number: PRMA-0262-000

Contents
1 Fibre Channel is a key technology for storage ................................1
Glossary
2 ATTO FibreBridge supports diverse SAN needs .............................3
2.1 ATTO FibreBridge 4500C characteristics ...........................5
Dimensions
Environmental requirements
Power
Reset button
Integration parameters
cPCI Configuration
Fibre Channel ports
SCSI ports
Ethernet port
Serial port
LED indicators
Installing the FibreBridge 4500C
2.2 ATTO FibreBridge 4500R/D characteristics ........................7
Dimensions
Cooling and airflow
Power
Fibre Channel ports
SCSI ports
Ethernet port
Serial port
Reset button
LED indicators
Mounting on a rack
2.3 Connecting SCSI devices to SCSI ports .............................9
2.4 Connecting the Fibre Channel ports ...................................10
3 Configuring the FibreBridge ..............................................................11
Command Line Interface (CLI)
Menu mode
ATTO BridgeTools
3.1 ATTO FibreBridge addressing .............................................13
Fibre Channel World Wide Name (WWN)
Arbitrated Loop Port Address (AL_PA)
Addressing devices
3.1.1 Mapping devices .....................................................14
AutoMap
AddressMap A
AddressMap B
AddressMap C
RouteXXX family

3.2 Handling multiple initiators ..................................................17
Single initiator
Multiple Fibre Channel initiators
Multiple FC & SCSI initiators
4 Accessing ATTO FibreBridge Services ............................................19
Access the ATTO FibreBridge through in-band SCSI over Fibre Channel
Access the ATTO FibreBridge over the RS-232 port
Configure the ATTO FibreBridge for a network over the Ethernet port
Access the ATTO FibreBridge using Telnet or FTP over Ethernet
4.1 Command line use and guidance ........................................21
4.1.1 General use commands ..........................................22
Help
Menu
RestoreConfiguration
SaveConfiguration
SerialNumber
VerboseMode
4.1.2 Diagnostic commands ............................................23
ClearEvent
DispEvent
DispFcPortDB
DisplayEvent
EccLog
ErrorLog
FcPortList
FcSCSIBusyStatus
FcTargets
FcWWName
FibreBridgeModel
FibreBridgeName
Help
IdentifyFibreBridge
Info
LogEvent
OEMConfigFile
ParityLog
Performance
POSTOutput
ScsiPortList
ScsiTargets
Temperature
XCDevices
XCError
XCStatus
4.1.3 Maintenance commands .........................................27
FirmwareRestart
FixedLengthReqSense
IsReserved
MaxEnclTempAlrm
MinEnclTempAlrm
Reserve

RestoreConfiguration
ScsiPortReset
SpeedWrite
SpeedWriteDefault
Zmodem
4.1.4 SCSI configuration commands ..............................29
ScsiInitID
ScsiPortBusSpeed
ScsiPortList
ScsiPortReset
ScsiPortResetOnStartup
ScsiPortSelTimeout
ScsiPortSyncTransfer
ScsiPortTaggedQueuing
ScsiPortWideTransfer
ScsiTargets
ScsiTermination
SpeedWrite
SpeedWriteDefault
VirtualDriveResponse
4.1.5 Fibre Channel configuration commands ..............31
BootFibreDelay
BootScan
BootScanPorts
DispFcPortDB
FcAck0
FcClass2
FcConnMode
FcFairArbFcFullDuplex
FcHard
FcHardAddress
FcInitiator
FcPortFailure
FcPortList
FcSCSIBusyStatus
FcTargets
FcWWName
FibreBridgeTargetLUN
Performance
ServicesLUN
4.1.6 Serial Port configuration commands ....................34
SerialPortBaudRate
SerialPortEcho
SerialPortHandshake
SerialPortStopBits
4.1.7 Ethernet configuration commands ........................35
DhcpFixedDelay
EthernetSpeed
Exit
IPAddress
IPDHCP
IPGateway
IPSubnetMask

4.1.8 Mapping commands ................................................36
AddressMap
AutoMap
BootFibreDelay
BootScan
BootScanPorts
DispFcPortDB
FcConnMode
FcHard
FcHardAddress
FcPortFailure
FcTargets
FibreBridgeTargetLUN
RouteChange
RouteDisplay
RouteOffline
RouteOnline
ScsiTargets
ServicesLUN
4.2 FibreBridge menu text-based CLI interface ........................39
4.3 ATTO BridgeTools provides graphical interface ...............40
4.4 In-band CLI uses SCSI over Fibre port ...............................41
5 Enhancing performance .....................................................................43
6 Updating firmware ..............................................................................44
7 Serverless backup support ................................................................45
Index: Command Line Interface ............................................................i
Appendix A: Board layouts ...................................................................iii
Appendix B: Examples of command usage ........................................v
RouteXxxxx commands
AutoMap Command Sequences
Appendix C: Standards and compliances ...........................................ix
Appendix D: Fibre Channel accessories .............................................. x
Appendix E: Contact ATTO Technology, Inc. .....................................xii

1 ATTO Technology FibreBridge 4500 Installation and Operation Manual
1 Fibre Channel is a key technology for storage
Fibre Channel is a serial communications technology designed to transfer large amounts of data
between a variety of hardware systems over long distances. It is a key technology for applications that
require shared, high bandwidth access to storage.
Fibre Channel provides a logical point-to-point
serial channel for the transfer of data between a
buffer at a source device and a buffer at a
destination device. It moves buffer contents from
one port to another, without regard to the format
or meaning of the data, so different upper level
protocols are able to run over Fibre Channel
hardware.
The Fibre Channel architecture is structured as a
hierarchical set of protocol layers. Defined within
these layers are rules for signal interfaces, serial
encoding and decoding, error control, frame
format and communications protocols.
All ATTO FibreBridge
TM
models can be used in a
SAN (Storage Area Network) to connect a variety
of Fibre Channel and SCSI devices to meet your
needs.
A SAN is a shared storage architecture connecting
computers and storage devices for online data
access. Each connected system can directly access
any attached storage device. Storage devices
could include RAID, tape backup, tape library,
CD-ROM library, standalone disk drives or
JBOD.
SANs maintain greater fault tolerance and load
balancing by supporting server clustering and
failover (the ability for one server to take over for
another in the event of a failure).
ATTO FibreBridge models provide the interface
between SCSI and Fibre Channel resources in
SANs. Possible configurations depend upon your
current hardware and what you need to do.
Glossary
Some terms used in the Fibre Channel industry are defined below. More information is available through
the Fibre Channel Industry Association (www.fibrechannel.com) , the Storage Area Networking Industry
Association
(www.snia.org) and the Fibre Channel Consortium (www.iol.unh.edu) .
Term Definition
fabric A Fibre Channel switch or two or more Fibre Channel switches interconnected to
physically transmit data between any two N_Ports on a switch or switches.
failover The substitution of a working system for one which has failed.
FC-AL Fibre Channel Arbitrated Loop: A Fibre Channel network in which up to 126
systems and devices are connected in a loop topology, with each transmitter
connecting to the receiver of the device to its logical right. The Fibre Channel
Arbitrated Loop protocol used for transmission is different from Fibre Channel
switched and point to point protocols. Multiple FC-AL loops can be connected via
a fabric switch to extend the network.
firmware Software stored in read-only memory (ROM) or programmable ROM (PROM).
Firmware is often responsible for the behavior of a system when it is first switched
on.

2
Glossary
F_port A port in the Fibre Channel fabric where a N_port may attach
FL-port A port in the Fibre Channel fabric where a NL_port may attach in an arbitrated
loop
hot swapping Components are removed and replaced while the unit is running, with power to
either the component or a device connected to the unit. Not all components are
hot swappable: please read installation and maintenance instructions carefully.
initiator device A component which originates a command
JBOD Just a Bunch Of Disks: a storage subsystem using multiple independent disk
drives with or without RAID configuration.
LED Light-emitting diode, a type of diode that emits light when current passes through
it. Visible LEDs are used as indicator lights on all sorts of electronic devices.
LUN Logical Unit Number: a SCSI or Fibre Channel identifier of a device
NL port A port attached to a node in Fibre Channel arbitrated loop or fabric loop
configurations
N_port A port attached to a node used with point to point or fabric configurations
RAID Originally Redundant Array of Inexpensive Disks, now Redundant Array of
Independent Drives: a storage system spanning multiple disk drives.
SCSI Small Computer Systems Interface: a processor-independent standard for
system-level interface between a computer and intelligent devices including hard
disks, floppy disks, CD-ROM, printers, scanners, etc.
topology Logical layout of the parts of a computer system or network and their
interconnections
Term Definition

3 ATTO Technology FibreBridge 4500 Installation and Operation Manual
2 ATTO FibreBridge supports diverse SAN needs
The ATTO FibreBridge  family of products provides a Fibre Channel-to-SCSI bridge available as a
Compact PCI board, a stand alone enclosure that can be fitted for rackmount integration, or a desktop
unit, depending on the model and your needs.
The ATTO FibreBridge family of products share
common configuration options and functions to
provide the most versatile connectivity options
available.
Each product has been engineered to address
specific customer needs. New capabilities are
integrated into products throughout the
FibreBridge family as much as possible, requiring
only an upgrade of firmware to incorporate them
into your SAN (see Chapter 6). To make sure you
have the most up-to-date version of the firmware,
visit the ATTO Technology website,
www.attotech.com.
All ATTO FibreBridge models include full duplex
mode, Class 2, Class 3 and direct fabric connect
capabilities.
Please refer to the Technical Specifications
available at www.attotech.com for more complete
information.

4
Introduction
ATTO FibreBridge and iPBridge availability matrix
FibreBridge
1180
FibreBridge
1290
FibreBridge
2300
FibreBridge
2350
FibreBridge
3300
FibreBridge
4500
iPBridge
2500
Configuration Board
Desktop
Board Board
Rackmount
Desktop
Board Rack mount Board
Rackmount
Desktop
Board
Rackmount
Desktop
Fibre Channel
ports
111113 0
FC port number 0 0 0 0 0 0, 1, 2
FC interface DB9/SC SFP SFP SFP SFP SC
Data transfer rate
per sec.
1 Gigabit 2 Gigabit 2 Gigabit 2 Gigabit 2 Gigabit 1 Gigabit 1 Gigabit
SCSI ports 1 2 2 2 2 4 2
SCSI bus number 0 0, 1 0, 1 0, 1 0, 1 0, 1, 2, 3 0, 1
SCSI negotiation
max capability
Ultra2 Ultra3 Ultra3 Ultra3 Ultra3 Ultra2 Ultra3
Ethernet
management port
(MP)
0 1
10/100
1
10/100
1
10/100
1
10/100
1
10/100
1
10/100/1000
iSCSI or NDMP
protocol

Ethernet data port
(DP)
000000 2
10/100/1000
Serial
management port
111111 1
In-band FC
management

Menu interface
 
BridgeTools
management
 
In-band CLI

Error checking &
correction memory
 
Serverless backup

ATTO ExpressNAV
browser-based
management

Advanced
diagnostics


5 ATTO Technology FibreBridge 4500 Installation and Operation Manual
2.1 ATTO FibreBridge 4500C characteristics
The ATTO FibreBridge 4500C is a Fibre Channel to SCSI bridge with a CPCI interface for high
throughput enterprise environments designed for mission-critical applications.
The FibreBridge 4500C is a single embedded PCB
with CPCI interface.
Dimensions
Width: 6.5 inches (170 mm)
Length: 9.25 inches (230 mm)
Height: .75 inches (19 mm).
Environmental requirements
Operating Temperature: 5-70
o
C
Humidity: 0-90% non-condensing
Ambient air should not exceed 50
o
C.
Airflow Recommended 200 LFM air flow
Power
The FibreBridge 4500C draws power from a standard
CPCI connector.
Reset button
The reset button near the LED indicators on the
connector side of the FibreBridge will restart the
FibreBridge without having to power cycle the drive
enclosure.
Integration parameters
➔ On board processor: Intel i960JT
Microprocessor
➔ Flash: 2x16Mbit to store Xilinx configuration
and i960, 2200 and 896/1010 firmware
➔ Internal 66MHx PCI bus
➔ 512 KB SDRAM
➔ FC ASIC: Qlogic ISP2200A
➔ HVD SCSI ASIC: LSI Logic SYM53C896
➔ LVD SCSI ASIC: LSI Logic SYM53C1010
cPCI Configuration
➔ 6 U PCB with dual (31, 32) interfaces per
PICMG 2.0 R3.0
➔ 31 connector - Type A 7x25 (154 pin plus 21
keying pins) for power, ground and power OK
LEDs
➔ 32 connector - Type B 7x22 (154 pin plus 0
keying pins) for power, ground and I
2
bus
➔ I
2
bus consists of data line and clock signal
➔ Hot swap capabilities per PICMG 2.1 R2.0
Fibre Channel ports
Each of the three fixed Fibre Channel ports can
connect the FibreBridge to either a Fabric or
Arbitrated Loop.
➔ 1.0625 gigahertz (200 MB/sec.in full duplex
mode)
➔ Class 2, Class 3 and ANSI Fibre Channel
specifications support
➔ PLDA, Public Loop Login (NL_port) and
Fabric Direct Connect (N_port) support
➔ Full Duplex transmission support
➔ Three independent SC optical connectors
SCSI ports
The four VHDCI SCSI ports on the FibreBridge
4500C connect storage devices into the Fibre Channel
Storage Area Network (SAN). Each port is totally
independent from the others.
A FibreBridge 4500C can be ordered with either of the
following SCSI ports:
Ultra 2 (LVD) SCSI 80 MB/sec. max per bus,
downward compatible with all forms of single-ended
SCSI
High Voltage Differential (HVD) Ultra SCSI 40
MB/sec. max per bus
Ethernet port
The 10/100 Base T Ethernet port supports FTP,
SNMP- and Telnet-based monitoring and
management through a command line interface, menu
system or graphical interface (ATTO BridgeTools).
Current draws 12V 5V 3.3V
LVD: 22.1 Watts 8.0A 2.29A 3.2A
HVD: 28.6 Watts 8.0A 3.71A 3.0A

6
FibreBridge 4500
Serial port
The 10-pin serial port connector provides support for
remote monitoring and management through a
command line interface, menu system or graphical
interface (ATTO BridgeTools).
In order to use the RS-232 port, you must ensure there
is enough clearance above the face plate for the ribbon
cable: do not place another card in the adjacent slot of
the CPCI rack. Connect the 10 pin to DB9 converter
cable to header P3 (in the same corner of the board as
the RJ45 connector)
LED indicators
Fault
FC 0 Activity, FC 1 Activity, FC 2 Activity:
each
LED blinks to show activity on the Fibre Channel port
(numbered 0, 1 and 2). During very high activity, the
LEDs appear to be steadily lit.
SCSI 0 Activity, SCSI 1 Activity, SCSI 2 Activity,
SCSI 3 Activity:
each SCSI bus has its own LED to
show activity on that bus (numbered 0, 1, 2, 3).
Ready: should light after the FibreBridge has passed
its internal self diagnostic test, indicating the
FibreBridge is ready to operate. Fault: indicates if
there is a problem with the FibreBridge. If the fault
LED blinks in a consistent pattern, contact ATTO
Technology Technical Support.
Installing the FibreBridge 4500C
The ATTO FibreBridge 4500C offers a variety
of ways to connect into a SAN.
1 Mount the FibreBridge 4500C into a
standard CPCI rack mount system or, for
custom placement, use the mounting holes.
2 Connect the SCSI devices to the
FibreBridge. (See Chapter 2.3)
3 Connect the FibreBridge to your SAN:
attach short wave optical cables into the
Fibre Channel ports on the FibreBridge.
(See Chapter 2.4)
4 Connect to the management (services) port
via the RS-232 serial port, Ethernet, or in-
band SCSI over Fibre Channel. (See
Chapter 4)
5 Use ATTO BridgeTools™, a graphical
interface utility enclosed with your
FibreBridge, or Command Line Interface to
map your devices to the appropriate
FibreBridge Fibre Channel ports (See
Chapter 3.1 and Chapter 4.1.8)
6 Boot the computers on the SAN and set up
the configuration for the devices connected
to the FibreBridge.

7 ATTO Technology FibreBridge 4500 Installation and Operation Manual
2.2 ATTO FibreBridge 4500R/D characteristics
The ATTO FibreBridge 4500R/D is a Fibre Channel to SCSI bridge for high throughput enterprise environments
designed for mission-critical applications which can be used on a desktop or in a rack.
The FibreBridge 4500R/D is a versatile enclosure with
attached feet for horizontal desktop use and mounting
brackets to convert to standard 19-inch enclosures. All
cable connections and the power switch are on one
outer panel (which may be considered the front or the
back of the bridge depending on your needs) while
LED indicators are on both outer panels.
Dimensions
Width: 16.725 inches (424.5 mm.)
Depth: 10 inches (253.8 mm)
Height: 1.72 inches (43.7 mm).
Weight: 10 pounds
Cooling and airflow
Temperature: 5-50
o
C
Humidity: 0-90% non-condensing
Ambient air should not exceed 50
o
C.
Air enters from the front and is exhausted out the
connector side by a blower inside the enclosure which
provides 11 cubic feet per minute of airflow.
WARNING Do not block the enclosure’s vents. The
FibreBridge will shut down if overheating occurs.
Power
The power supply circuit is permanently mounted
within the enclosure and is not hot swappable. It has
one standard IEC320 power receptacle and switch.
The universal power supply provides power for the
bridge board and cooling fans.
Input voltage 110/230V AC, with operating input
range of 90-132V AC or 175-264V AC, 47-63Hz,
single phase. The AC input range selection is
automatic with no manual or jumper switchover
required.
Output voltage +12V at 0.4 amps, +5 at 3.0 amps,
+3.3V at 7 amps.
Power draw 2 amps at 110V.
Fibre Channel ports
Each Fibre Channel port can connect the FibreBridge
to either a Fabric or Arbitrated Loop.
➔ 1.0625 gigahertz (100 MB/sec.)
➔ Class 2, Class 3 and ANSI Fibre Channel
specifications support
➔ PLDA, Public Loop Login (NL_port) and Fabric
Direct Connect (N_port) support
➔ Full Duplex transmission support
➔ Fixed optical short wave connectors
SCSI ports
The four SCSI ports on the FibreBridge 4500 connect
storage devices into the Fibre Channel Storage Area
Network (SAN). Each port is totally independent.
A FibreBridge can be ordered with either of the
following SCSI ports:
Ultra 2 (LVD) SCSI 80 MB/sec. max per bus, downward
compatible with all forms of single-ended SCSI
High Voltage Differential (HVD) Ultra SCSI 40 MB/sec.
max per bus
Ethernet port
The 10/100 Base T Ethernet port supports FTP-,
SNMP- and Telnet-based monitoring and
management.
Serial port
The RS-232 serial port provides support for remote
monitoring and management.
Reset button
The reset button near the LED indicators on the
connector side of the FibreBridge will restart the
FibreBridge.
LED indicators
FC 0 Activity, FC 1 Activity, FC 2 Activity each LED
blinks to show activity on the Fibre Channel port
(numbered 0, 1 and 2). During very high activity, the
LEDs appear to be steadily lit.
SCSI 0 Activity, SCSI 1 Activity, SCSI 2 Activity, SCSI 3
Activity
each SCSI bus has its own LED to show
activity on that bus (numbered 0, 1, 2, 3).
Ready should light after the FibreBridge has passed its
internal self diagnostic test, indicating the FibreBridge
is ready to operate.
Fault indicates if there is a problem with the
FibreBridge. If the fault LED blinks in a consistent
pattern, contact ATTO Technology Technical Support.

8
FibreBridge 4500
Installing the FibreBridge 4500C/R/D
1Physically place the FibreBridge 4500 where you
want it, horizontally on a desktop or into a rack.
2Connect the SCSI devices to the FibreBridge.
(See Chapter 2.3)
3Connect the FibreBridge to your SAN: attach
short wave optical cables into the Fibre Channel
ports on the FibreBridge. (See Chapter 2.4)
4Connect to the management (services) port via
the RS-232 serial port, Ethernet, or in-band SCSI
over Fibre Channel. (See Chapter 4)
5Use ATTO BridgeTools™, a graphical interface
utility enclosed with your FibreBridge, or the
Command Line Interface, map your devices to
the appropriate Fibre Channel ports. (See
Chapter 3.1 and Chapter 4.1.8)
6Boot the computers on the SAN and set up the
configuration for the devices connected to the
FibreBridge.
Mounting on a rack
➔ You may install “L” brackets so that either the front
or the connector side of the FibreBridge 4500 can
be facing front. The mounting holes on the “L”-
bracket fit a standard 19-inch rack using a centered
1.25-inch (31.7 mm) hole pattern.
➔ The ATTO FibreBridge 4500R weighs about 10
pounds. Be careful when installing it a rack.
➔ Always stack the rack from the bottom up to ensure
a stable and safe rack.
➔ Minimum rack depth: 10 inches.
➔ Make sure the power requirements of the ATTO
FibreBridge 4500R plus the cumulative power
draw of the other equipment in the rack do not
overload the supply circuit and/or wiring of the
rack.
➔ Properly ground the FibreBridge 4500R to the rack
equipment. The earth ground connection must be
maintained when supply connection is other than
direct connection to the branch circuit.
➔ Install the FibreBridge horizontally within the rack
so it does not reduce the air flow within the rack.
The maximum ambient temperature for the ATTO
FibreBridge 4500R should not exceed 50° C
Exhibit 2.2-1 The ATTO FibreBridge 4500R/D: place horizontally on desktop or in rack. Note cooling pattern:
overheating can shut down the FibreBridge. Do not block air vents.
8 in between
bracket holes
Mountin
g
bracket
holes 1 inch from edge
and 1 inch from each
other
1.72 in.
16.725 in.
Air flow
Air flow
Air flow
Power switch, receptacle
FibreBridge 4500R/D overview
FibreBridge 4500R/D front
FibreBridge 4500R/D connector side

9 ATTO Technology FibreBridge 4500 Installation and Operation Manual
2.3 Connecting SCSI devices to SCSI ports
ATTO FibreBridge SCSI ports are used to connect SCSI storage devices into the Fibre Channel Storage
Area Network (SAN).
A FibreBridge may have the following types of
SCSI ports:
Ultra 2 (LVD) SCSI 80 MB/sec. max per bus
Single Ended Ultra SCSI 40 MB/sec. max per bus
High Voltage Differential (HVD) Ultra SCSI 40
MB/sec. max per bus
The high voltage differential (HVD) FibreBridge
is compatible only with HVD SCSI devices. An
LVD FibreBridge is downward compatible with
Single Ended Ultra SCSI as well as Fast, Wide, or
Narrow SCSI devices.
Each SCSI port is totally independent from the
any other SCSI port. This means that each bus is
capable of supporting 15 devices and each bus is
capable of 40 or 80 MB/sec. (Ultra or Ultra2).
However, you may use externally provided
software striping to create a RAID 0 group that
includes devices from all SCSI busses to increase
overall performance.
Another advantage of independent SCSI ports is
that each SCSI bus auto-negotiates the
appropriate sync rates with the connected devices.
If slower devices are mixed with faster Ultra2
devices, the bus will communicate at the rate of
the slowest device, thus wasting the performance
capabilities of the faster devices. You should
connect slower devices to one SCSI port and
connect faster devices on another port on your
FibreBridge.
The FibreBridge supports a wide variety of SCSI
storage devices including stand-alone drives,
removable drives, JBODs, RAIDs, tape, CD and
DVD drives, changers, libraries and magneto
optical drives.
To connect SCSI devices to the ATTO
FibreBridge:
1Connect a VHDCI SCSI connector from the
SCSI device to a port on the FibreBridge
4500.
Check the type of cable and cable length limit for
each port. It is important to keep cable lengths as
short as possible to ensure the highest signal
quality and performance. These cable lengths
include the wiring inside the devices.
2 Set the IDs of the SCSI devices connected to
the bridge to a value other than 7. You
should use a sequential ID starting at 0 for
each device. Each SCSI port in the ATTO
FibreBridge has an internal factory setting
ID of 7, typical for a SCSI initiator device.
NOTE The entire SCSI bus will operate at the speed of
the slowest device. If you wish to mix devices of different
SCSI speeds on the bridge, it is best to place them on
separate busses. That is, put the slower devices on
bridge SCSI busses 0 and 1, and the faster devices on
bridge SCSI busses 2 and 3. Each bus is independent so
each can operate at different speeds.
3 Terminate each SCSI bus after the last
device. The bridge is terminated internally.
Device type Cable limit
Ultra SCSI Single Ended (SE) 1.5 meters
Ultra SCSI High Voltage Differential (HVD) 25 meters
Ultra2 SCSI Low Voltage Differential (LVD) 12 meters

10
2.4 Connecting the Fibre Channel ports
The Fibre Channel ports on the ATTO FibreBridge 4500C/R/D connect the bridge into either a Fabric
or Arbitrated Loop.
Fibre Channel technology offers a variety of
cabling options including standard copper,
equalized copper, multimode fiber optic, and
single mode fiber optic.
The FibreBridge 4500C/R/D uses an SC fiber
optic cable connector.
The type of cable to use varies depending upon
the application, environment and distance. The
following tables illustrate the different cable
options available.
Make sure all cables are anchored securely at both
ends with the proper connectors.
Cable length Cable type Cable size Connector
Up to 175 meters multi mode fiber optic 62.5 micron SC optic connector
Up to 500 meters multi mode fiber optic 50 micron SC optic connector

11 ATTO Technology FibreBridge 4500 Installation and Operation Manual
3 Configuring the FibreBridge
Configuration of the ATTO FibreBridge, also known as FibreBridge Services
,
is available via ATTO
BridgeTools (a graphical user interface configuration manager), Command Line Interface (CLI) or a
menu.
FibreBridge Services includes displaying and
modifying various attributes of FibreBridge
operation, as well as the update of firmware. You
may use a graphical interface (ATTO
BridgeTools), command line interface (CLI) or
menu system, depending on your FibreBridge
model, your operating system, what you want to
accomplish, and the method you are using to
access FibreBridge services.
Command Line Interface (CLI)
The Command Line Interface provides access to
FibreBridge Services through ASCII command
lines. CLI is designed to be used by applications
such as ATTO BridgeTools and experienced
users. The initial display, after powering up the
unit or restarting the firmware, will contain the
information in Exhibit 3-1. Once the initial
display is complete, with the word
Ready , you are
in the Command Line Interface mode.
Type Help to display a list of all commands
available.
Menu mode
The Menu contains most commands available
through CLI but in a hierarchal format. It follows
a standard menu/choice model.
The initial display, after powering up the unit or
restarting the firmware, will contain the
information in Exhibit 3-1. Once the initial
display is complete, with the word Ready , you are
in the Command Line Interface mode. Type
Menu
and you will enter the menu system.
ATTO BridgeTools
The simplest way to communicate with the bridge
is to use ATTO BridgeTools, a Java-based
graphical interface configuration utility designed
to flash firmware and manage the configuration
for all models of the FibreBridge.
The ATTO BridgeTools program currently
supports Sun Solaris 8, MAC OS 10.1 and
Windows 95/98/ME, NT and 2000.
ATTO BridgeTools detects which FibreBridge
model is available and presents you with the
applicable configuration options. At the startup, a
screen will present choices to communicate with
the FibreBridge. You can choose between an in-
band connection direct over the Fibre Channel
link, an RS-232 port or an Ethernet port.
A tabbed panel interface presents configuration
parameters in a simple, one-window display.
Message boxes, icons, drop-down boxes, menu
bars and other common graphical constructs lead
you through the configuration process.
Refer to the ATTO BridgeTools Manual for
complete instructions to how to install and operate
the program.

12
Software configures, manages
Exhibit 3-1 Post power up display. Type menu to enter the menu system; type help for a list of CLI commands
ATTO FibreBridge 4500
(c) 2001 ATTO Technology, Incorporated.
Firmware version 002R release date Feb 14 2001, 16:01:43 Build
002R
Power-On Self-Test Completion Status: GOOD
64 Megabytes of RAM Installed.
3 1.0624 Gb/s Fibre Channel Interfaces.
4 LVD SCSI Interface Ports.
Interface 0 World Wide Name = 20 00 00 10 86 10 00 00
Interface 1 World Wide Name = 20 00 00 10 86 10 00 01
Interface 2 World Wide Name = 20 00 00 10 86 10 00 02
FibreBridge Serial Number = "FB4500L000000”
FibreBridge Name = " “
Internal Temperature = 50 C [0 - 70]
ErrorLog Contents: NO ERRORS
For help, type HELP.
Ready.

13 ATTO Technology FibreBridge 4500 Installation and Operation Manual
3.1 ATTO FibreBridge addressing
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.
The chart below is a simplified overview of data
and control flow between the application and the
SCSI device through a number of stages.
Fibre Channel World Wide Name (WWN)
Each Fibre Channel device is assigned a unique
World Wide Name (WWN). The WWN is used to
identify all Fibre Channel devices. The 64-bit
WWN has the following format:
The Institute of Electrical and Electronics
Engineers (IEEE) assigns each manufacturer a
unique Company ID. The Device ID field
contains a unique value assigned by ATTO
Technology to every Fibre Channel product
produced by ATTO Technology.
Arbitrated Loop Port Address (AL_PA)
On a Fibre Channel Arbitrated Loop, the
FibreBridge appears at a single Arbitrated Loop
Port Address (AL_PA). Each device on an
arbitrated loop is assigned a unique AL_PA
during loop initialization. The FibreBridge
supports both modes of AL_PA assignment,
commonly referred to as hard and soft addressing .
Soft addressing allows the loop initialization
master to assign the FibreBridge a unique AL_PA
during the loop initialization process. The AL_PA
assigned cannot be determined before loop
initialization. For example, adding new devices to
an arbitrated loop may change the AL_PA
assigned to the FibreBridge.
Hard addressing allows a predetermined AL_PA
to be assigned to the FibreBridge. The
FibreBridge will try to acquire the desired hard
AL_PA. If another device has already been
assigned the specified AL_PA, the FibreBridge
will acquire a currently unassigned AL_PA.
ATTO BridgeTools software allows you to select
either hard or soft addressing modes. The default
mode is soft addressing.
Addressing devices
SCSI devices connected to the FibreBridge also
show up as Fibre Channel LUNs to the host
computer. SCSI devices must be on the same
addressing level as the SCSI portion of the
FibreBridge. The FibreBridge SCSI ports must be
set to different SCSI IDs than the devices on the
bus.
Application
Read & write data
Operation
System
SCSI LUN addressing in OS native form
.
Host Bus
Adapter
Maps OS native LUNs
FCP
(SCSI)
FCP_CMD: LUN plus CDB plus data
FibreBridge
Parse Fibre port and Fibre LUN into SCSI
BUS:Target:LUN
SCSI bus
Transport SCSI address, CDB and data
to/from SCSI device
SCSI
device
SCSI device operation
Field
Name
WWN
Format Company ID Device ID
Byte 01234 567
Value 2000001086 xxxxxx