ATTO Technology iPBridge 2600 User manual

ATTO iPBridge 2600
Installation and Operation Manual

ATTO Technology, Inc.
155 CrossPoint Parkway
Amherst, New York 14068 USA
www.attotech.com
Tel [phone]
Fax [phone]
Sales support: [email protected]
Technical support: Monday -- Friday, 8am-8pm EST
[email protected]
© 2007 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.
9/2007
................................................................................................................................................... PRMA 000-0371-000

Contents
1 ATTO iPBridge provides storage options .......................................1
Embedded software features
Connectivity, infrastructure solutions
1.1 Physical components ..........................................................3
Dimensions
Environment
Power
SCSI ports
Ethernet data ports
Management ports
Reset/restore factory default switch
LEDs
2 Installation ..........................................................................................5
Unpack the packing box; verify contents
Place the iPBridge into your system
Install Windows drivers
Discover the IP address
Install MS iSCSI Initiator for Windows
Install iSCSI Initiator for OS X
Set up Internet Explorer
Begin configuration
3 Configure the iPBridge ......................................................................7
Preliminary steps
ExpressWizard
3.1 Target management .............................................................9
Target names
Default target node
Automatically configure a single target
Map devices manually
Multiple target nodes
Automatically configure multiple targets
Manually configure multiple target nodes
3.2 iSCSI configuration ..............................................................12
Ethernet
iSCSI
CHAP commands
3.3 Optional changes .................................................................13
Preliminary steps
Modify passwords
Set up a VLAN: Virtual Local Area Network
Enhance performance
iSCSI performance configuration tool (Windows only)

4 Remote system monitoring ...............................................................15
SNMP
Email notification
5 Updating firmware .............................................................................17
Using ATTO ExpressNAV
Using FTP
6 Troubleshooting .................................................................................18
Inside out method
Check basic diagnostic tools
Check the host event log
Check the iPBridge event and trace logs
Visually inspect LEDs
Check host versions
Check iPBridge product versions
Check components
Check SCSI devices
Check the iPBridge SCSI port
Check the serial port
Check the iPBridge internal configuration
Check the iPBridge Ethernet port
Check the LAN/WAN
Check the iSCSI Host Adapter or NIC
Check the iSCSI OS driver
Check the Operating System
Check the applications
Performance issues
Check SCSI devices
Check iPBridge SCSI ports
Check iPBridge Ethernet ports
Check the LAN/WAN
Check Ethernet Host Adapter or NIC
Check the applications
Check the host system
Check the Operating System
Use the ATTO iSCSI performance configuration tool for Windows
Optimize ATTO ExpressNAV in Internet Explorer
Reset/restore factory defaults
7 Interface options ................................................................................25
Using ExpressNAV
Opening an ExpressNAV session
Optimizing ExpressNAV in Internet Explorer
Using the serial port
Using Telnet

Appendix A Cabling ...............................................................................i
SCSI cabling
Cable types
Examples
Connecting SCSI devices to SCSI ports
Ethernet connections
Appendix B CLI provides an ASCII-based interface ...........................iii
CLI error messages
CLI summary
Alphabetical CLI command explanations
Appendix C Safety standards and compliances .................................xvi
Appendix D Warranty information ........................................................xviii
Manufacturer limited warranty

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ATTO Technology Inc. iPBridge Installation and Operation Manual
1 ATTO iPBridge provides storage options
The ATTO iPBridge
TM
2600 iSCSI to SCSI bridge offers an affordable opportunity to transform SCSI
storage into network-enabled addressable devices, creating scalable solutions for an iSCSI SAN.
The iPBridge 2600 is a cost effective, high
performance bridge using four Gigabit Ethernet ports
and two independent Ultra 320 SCSI busses.
Because the iPBridge 2600 provides a compact
embeddable, rack or desktop solution, you can install
the iPBridge in a wide range of system configurations.
The ATTO iPBridge supports the high throughput
needs of streaming data transfers, optimizing
performance and management using ATTO
Technology intelligent Bridging Architecture
™
.
The iSCSI protocol allows storage devices such as
hard drives, tape drives and libraries and CD
jukeboxes to attach easily to Internet Protocol
networks such as Gigabit Ethernet. Gigabit Ethernet
(GbE) is a transmission technology based on the
Ethernet format and protocol used in local area
networks (LANs), providing a data rate of 1 billion
bits per second (one gigabit) as defined in the IEEE
802.3 standard.
The iSCSI protocol increases the capabilities and
performance of storage data transmission by
transmitting data over local area networks (LANs),
wide area networks (WANs), or the Internet, providing
location-independent data storage and retrieval to
enhance current and future Storage Area Networks
(SANs).
The iSCSI protocol enables complete SAN solutions
based on a Gigabit Ethernet network infrastructure.
iSCSI is a logical SAN alternative to direct-attached
storage where simplicity, flexibility and
price/performance are critical. Data may be accessed
from virtually anywhere that can be reached through
the Internet, eliminating physical boundaries.
iSCSI also lowers the investment cost of adding new
servers to a SAN for both primary storage and backup
applications.
Embedded software features
• ATTO ExpressWizard, one-button initial setup
for most configurations
• SpeedWriteTM,:a performance-enhancing
capability that significantly boosts Write
performance by efficiently managing Write
commands between host and a tape device.
• Security through Virtual LANs, Access Control
Lists (ACLs) and multiple levels of password
protection.
• Advanced Diagnostics include software event-
logging capability time and date stamped by the
real time clock. You can also determine
numerous status and current configuration
parameters.
• ATTO ExpressNAV™: a web-based
management application that allows all of the
configurable settings for the iPBridge to be
defined, viewed and edited.
Connectivity, infrastructure solutions
The topology of a heterogeneous Storage Area
Network shown on the next page demonstrates the
critical role ATTO products play in the design and
implementation of a SAN. Whether your application
needs are data-intensive or band-width intensive, you
need to store and manage that data and then deliver it
to end-users efficiently. ATTO products have been
engineered with the highest performance and lowest
cost available today.
• 4 independent 100/1000 GbE RJ45 Ethernet
ports
• Supports IP V 4
• Compliance with IEEE 802.3 GbE
• Supports Microsoft iSCSI Initiator v2.01and
newer
• Dual independent Ultra320 LVD/SE SCSI bus
ports; backwards compatible with all low voltage
differential and single-ended SCSI devices.
• RJ-45 Ethernet management port connector
• RS-232 serial console port
• Operating System independent
• Supports all SCSI devices including hard disk
drives, tape drives, RAID controllers, DVD, MO
and CD libraries
• Available as a desktop or rack mount enclosure

2
Exhibit 1.0-1 Possible storage configurations

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ATTO Technology Inc. iPBridge Installation and Operation Manual
1.1 Physical components
The ATTO iPBridge 2600 is a 1-Gigabit Ethernet to SCSI 1U full-rack bridge for high performance, cost
effective solutions in enterprise environments.
Dimensions
Width: 16.91 inches wide (42.95 cm)
Depth: 10 inches deep (25.4 cm)
Height: 1.72 inches high (4.32 cm (1U)
Weight: approximately 8 pounds
Environment
Operating temperature: Ambient air should not
exceed 40 °C
Humidity: 5-95% non-condensing
Power
Input voltage: 100-240VAC, 1.7-.7A, 50-60 Hz
Battery-backed event log: A rechargeable
Lithium ion battery cell holds the event log
memory for up to 30 days. If the iPBridge has
been disconnected from power, recharging begins
automatically when power is restored. The battery
is fully charged after 36 hours.
WARNING
Risk of explosion if battery is removed
and/or replaced by an incorrect type.
Dispose of used batteries in accordance
with your local environmental regulations.
SCSI ports
The two independent SCSI ports are Ultra 320
busses with 68-pin VHDCI connectors,
downward compatible with all forms of low
voltage differential and single-ended SCSI.
Ethernet data ports
The four independent 100/1000 Ethernet RJ-45
data ports are labeled Ethernet ports 1, 2, 3 and 4.
Ethernet cables must be at least CAT-5E certified.
Management ports
A 100 Mb/sec. Ethernet standard RJ-45
management port and an RS-232 serial port
provide support for remote monitoring and
management. The serial port is set at the factory at
115,200 bps.
Reset/restore factory default switch
To reset the iPBridge, briefly insert a tool in the
hole in the back panel for less than three seconds.
See Exhibit 1.1-1.
To restore factory defaults, insert the tool in the
hole in the back panel for more than four seconds
until the green Ready LED blinks.
LEDs
From the front of the iPBridge (see Exhibit 1.1-1):
Bicolor Ready/Fault: off means not ready; green
on shows ready, and yellow on means fault.
Power: indicates power has been applied.
Ethernet 100/1000: off indicates 100 Mb/sec.
speed; yellow shows 1000 Mb/sec. speed.
Ethernet Activity: lights green to represent an
active link, blinks to show activity and goes dark
when no link is present.
SCSI Activity: lights green to show activity; off
shows no activity
From the connector side (see Exhibit 1.1-1) :
Bicolor Ready/Fault: off means not ready; green
on indicates ready, and yellow on shows fault
Ethernet port link: green on means an active link;
off shows no link.
Ethernet port activity: Blinking yellow indicates
management activity.
Ethernet speed: green on indicates 100 Mb/sec.
speed; yellow on indicates 1000 Mb/sec. speed.
Ethernet activity: Solid on represents a link is
present; blinking indicates activity, and off shows
no link is present
SCSI Activity: on indicates activity; off shows no
activity.

4
Exhibit 1.1-1 Details of the LED indicators on the front and connector sides of the iPBridge.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
2 Installation
If you have not already completed the instructions on the Quick Start packed with your iPBridge, use
the following instructions to install the iPBridge.
Unpack the packing box; verify contents
• The iPBridge
Note the serial number of your iPBridge,
located on the bottom of the unit, for later use:
______________________________
• Serial cable
• Power cord
• “L” brackets and screws
• CD which includes the Installation and Operation
Manual, ATTO QuickNAV and ATTO drivers
Place the iPBridge into your system
1 Place the iPBridge on a stable flat surface or
install it into a standard rack.
If installing into a rack, see Exhibit 2.0-1.
a. Attach brackets so that the front side with
the LEDs face front and the connector side
is at the back.
b. Install the iPBridge horizontally within the
rack so it does not reduce the air flow within
the rack.
2 Connect the host computer to SCSI target
devices. Refer to Cabling on page i of the
Appendix.
3 Power up the SCSI devices. Proper termination
is required.
4 Connect the iPBridge Ethernet port on the host
computer to your network using at least Cat5e
cable.Refer to Cabling on page i of the
Appendix.
5 Connect the AC power cord from the iPBridge
to the proper AC source outlet.
CAUTIONCAUTION
The power source must be connected to a
protective earth ground and comply with
local electrical codes. Improper grounding
may result in an electrical shock or damage
to the unit.
If installing into a rack note that the power
requirements plus the power draw of the other
equipment in the rack must not overload the
supply circuit and/or wiring of the rack.
6 Turn on the power switch on the iPBridge.
7 Wait up to two minutes for the iPBridge Ready
LED to light indicating the bridge has completed
its power-on self test sequence.
8 Windows
® users continue to Install Windows
drivers; Mac ® users continue to Discover the
IP address.
Install Windows drivers
1 Windows automatically detects the iPBridge
and asks for the driver in the Add Hardware
wizard. Select Install from a list or specific
location.
2 Click Next.
3 Choose Don’t Search,
4 Click Next.
5 Choose Have disk.
6 Specify the driver as found in the PC folder in
the setup CD. The files are in a folder based on
your operating system. Use the files directly
from the CD or copy them onto a floppy or to a
local directory on your hard drive.
7 Follow the remaining instructions to complete
the installation procedure.
8 After the driver is installed, the iPBridge is listed
in the System Devices folder.
Discover the IP address
1 From the CD supplied with your iPBridge, run
the QuickNav Utility QuickNAV-windows.exe
for Windows or QuickNAV-Mac for OS X.
2 Locate the iPBridge with the serial number
recorded earlier.
3 Highlight the serial number.
4 Click Next.
If a DHCP server is available on your network,
an address is assigned automatically by the
server. Note the assigned address:
_____________________________________
If you do not have a DHCP server, get an IP
address and subnet mask from your network
administrator, type it into the area provided, and
select Next. Note the IP address and subnet
mask here._____________________________
5 Click on Launch Browser.
Windows users continue to Install MS iSCSI
Initiator for Windows; Mac users continue to
Install iSCSI Initiator for OS X.

6
If you use Internet Explorer, use Set up Internet
Explorer if needed.
Install MS iSCSI Initiator for Windows
1 Download the latest version of Microsoft® iSCSI
Software Initiator from
www.microsoft.com/downloads. Searching
on iSCSI Initiator helps to locate it.
2 Launch the Initiator installation program and
follow the instructions.
3 Find the Microsoft iSCSI Initiator icon on your
desktop and launch the program.
4 Click on the Discovery tab.
5 Click on the Add button under the target portal
heading.
6 Type in the iPBridge IP address recorded in
Discover the IP address on page 5.
7 Click on OK.
8 Click the Targets tab.
9 Click on Log on button.
10 Select Automatically restore this connection
when the system reboots.
11 Click OK to complete logon.
12 If the Found New Hardware Wizard appears,
follow the instructions and install the driver from
the CD that came with your iPBridge.
13 Click OK to close the iSCSI Initiator utility.
You should now have storage you can manage
through Windows Disk Management.
Continue to Begin configuration.
Install iSCSI Initiator for OS X
Contact your ATTO sales representative or go to
www.attotech.com to purchase the ATTO
Technology Xtend SAN iSCSI Initiator for OS X.
Set up Internet Explorer
1 Open your browser.
2SelectInternet Options.
3 In the Internet Options screen, select the
Security tab.
4 Click on the Trusted Sites icon.
5 Click on the Sites button.
6 In the text box Add this Web site to the zone,
add the IP address of the iPBridge. You may
use wild cards.
7 Click on Add.
8 Uncheck the Require server verification
check box.
9 Click OK.
10 At the bottom of the Internet Options box, click
on OK and close the box.
Begin configuration
1 Return to the ExpressNAV interface welcome
screen. Click on Enter Here.
2 Type in the user name and password.
Note
The default values are user name root and
password
Password . The user name is case
insensitive and the password is case
sensitive.It is best practice to change the
default user name and password. Refer to
Modify passwords on page 13.
3TheStatus page appears. Continue to
Configure the iPBridge on page 7.
Exhibit 2.0-1 Install the iPBridge into a rack using the brackets provided.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
3 Configure the iPBridge
To configure the ATTO iPBridge, use ATTO ExpressNAV. Default values are appropriate for most
configurations, but may be modified.The ExpressWizard provides one-button setup for many applications.
Default values are appropriate for most applications. If
you wish to change these values, use ATTO
ExpressNAV, a browser-based graphical interface.
Other methods are also available. Refer to
Interface
options on page 25.
If you do not use the ExpressWizard, continue to
• Mapping and addressing, also known as Target
management on page 9
• iSCSI configuration on page 12
• Optional changes on page 13
Preliminary steps
1 If you are not already in
the ExpressNAV
interface, type the IP
address of your
iPBridge in a standard
browser as found in
Using ExpressNAV on
page 25, click Enter
Here, type in your user
name and password,
and click OK.
2TheStatus page
appears.
You may view the
default settings by
clicking on each
element in the left hand
menu, then continue in
one of three ways:
• Review the settings, keeping the automatic
settings created when you powered up your
iPBridge and do nothing now.
• Use the ExpressWizard, accessed from the
side menu, to initially set up your iPBridge
and its attached storage for specific
applications automatically.
• Use the individual pages listed on the side
menu to make changes or use other features
as needed.
ExpressWizard
Most applications may be set up automatically
using the ExpressWizard from the ExpressNAV
interface. The ExpressWizard simplifies initial
configuration of the iPBridge.
1 Follow the Preliminary steps.
2 From the side menu select ExpressWizard.
3 Select your storage type:
• Digital video disk storage: optimized for
digital video (sequential access)
configurations
• Digital audio disk storage: optimized for
audio applications (sequential access)
• IT/database disk storage optimized for
general IT and database applications
(random access).
• Tape storage
• Optical storage
4 Click Next.
5 In the Devices Detected page, click on
Rescan to ensure all the devices you wish in
your storage configuration are present. The
ExpressWizard uses all attached storage for
the configuration.
6 When all devices are listed, click Next.

8
7 Data port IP address, subnet mask and
gateway information is listed. Change any
elements as needed.
8 Click Next.
9 Select the answer to the question Does your
network support Jumbo Frames?
10 Click Next.
11 Set your administrator password.
12 Click Next.
13 The configuration for the iPBridge based on
your input in the previous screens appears. If
the information is correct, click Commit.
14 The ExpressWizard configures your iPBridge
and storage. You may select items on the left
side menu to view the current configuration or
to change the configuration.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
3.1 Target management
Storage devices are mapped using the designations for the iSCSI LUN. The easiest way to map devices
is to use the Automatic Target Management feature in the ATTO ExpressNAV interface.
CAUTIONCAUTION
Changing the device map can affect the
host’s view of devices and your application
configuration.
To map devices, you must connect the devices to
one of the iPBridge SCSI ports. To access mapped
devices over Ethernet, you must have a host
computer connected to one of the iPBridge
Ethernet data ports.
If you decide to change the automatic mapping set
up when you powered up the iPBridge, you have
two options to map devices after you disable
automatic mapping:
• You may map devices manually to the single
default node.
• You may map each device to its own target to
break the single iSCSI target node into multiple
nodes. Multiple target nodes allow greater
flexibility to grant or deny access between
initiators and devices.
If you divide the default single target node into
multiple target nodes, you must set up access to
each node separately.
See Exhibit 3.1-1 on page 11 to see the difference
between single target node and multiple target
nodes.
Target names
Each iSCSI target node accessed through the
Ethernet port on an iPBridge is identified by a
unique world-wide iSCSI-qualified name. This
format references the iPBridge serial number and
target node name:
iqn.1995-12.com.attotech:ipbridge:
serialnumber <targetname>
Default target node
The default target is set as a single target with
Access Control (ACL) disabled and CHAP
authentication disabled. The default target node
cannot be deleted. The iPBridge maps devices
automatically although you can map devices
yourself.
Automatically configure a single target
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 25, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears. From the
ExpressNAV menu, select Auto Target Mgt.
3 Click on the Map all devices to default target
button.
4 When the action is complete, the iSCSI Target
Management page appears. Make any
adjustments to the mapping or begin a
discovery session.
If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.
Map devices manually
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 25, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears. Select the Manual
Target Mgt menu item on the left side of the
screen.
3 Click on the Device Maps link of the default
target.

10
4 Select the devices from the box on the right
hand side of the screen and drag to the
appropriate LUN on the left.
5 Click Submit.
If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.
Multiple target nodes
Multiple targets allow you to create a more
configurable mapping scheme which can
segregate storage into different iSCSI nodes
within the iPBridge, with each iSCSI target
having its own set of access criteria.
For example, if you have two servers and a library
with four tapes and a media changer, the default
node would provide both servers access to all
tapes and the media changer (default target
mode).
If you configured multiple target nodes, you are
able to map some devices to one server and other
devices to the other server, requiring separate user
names and passwords for access using various
methods including Access Control Lists, iSNS
and CHAP authentication. Consult with your
network administrator and refer to Exhibit 3.1-1.
Note
If you map actual storage to more than one
iSCSI target and a server has authorization for
both targets, the server could show duplicate
storage without any warning.
Automatically configure multiple targets
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 25, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears. From the
ExpressNAV main menu, select Auto Target
Mgt.
3 Click on the Map each device to its own
target button.
A target name suffix is added to the iqn of each
device such as
vendorid-devicename-xxx
• vendorid is the device vendor ID
• devicename is the device’s inquiry device
name.
• xxx is a device index
When the action is complete, the screen returns
to the iSCSI Target Management page.
If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.
Manually configure multiple target nodes
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 25, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears. Select Auto Target
Mgt menu item on the left side of the screen.
3 In the iSCSI Target Management page, type
[name] in the Add an iSCSI target box
The name is a suffix appended to the standard
IPBridge iqn name. The suffix name can be up
to 24 characters.
4 Click on the device map link of your target.
5 After the next mapping page opens, drag the
boxes representing devices to the LUNs you
want.
6 Click Submit.
7 Repeat from Step 3 for each node you want to
configure.
8 If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
Exhibit 3.1-1 Target node configurations

12
3.2 iSCSI configuration
You may fine-tune the iPBridge using the ATTO ExpressNAV interface.
Several special iPBridge features may be
accessed using the ExpressNAV graphical user
interface. For details on each command, refer to
CLI provides an ASCII-based interface on page
iii of the Appendix.
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 25, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears. Click on the menu
item which regulates the parameter you wish to
change.
• Ethernet: iSCSI port number
• iSCSI iSCSI Alias, ISNS Login Control,
iSNSServer, Speedwrite
• CHAP commands: iSCSI Chap Secret, iSCSI
Target by using the Manual Target Mgt
menu
3 Click Submit on each page when you make
changes to save your choices. When you have
completed all changes, go to the Restart page
and click on Restart.
Ethernet
Click on the Ethernet menu item.
iSCSI Port Number
Specifies the port number whereby the iPBridge listens
for iSCSI connections. The port number must be between
1024 and 65535 except for port 860. The default is 3260.
iSCSI
Click on the iSCSI menu item.
iSCSI Alias
Provides a human-readable name assigned to the
iPBridge. Aliases may be 1 to 64 characters long and may
contain spaces if spaces are enclosed in quotation
marks. The default is a blank space.
iSNS Login Control
Specifies whether the iPBridge will delegate its access
control/authorization to an iSNS server. Default is
disabled.
Note
iSNS Login Control cannot be used with
Access Control found on the
iSCSI Target
Management
page.
iSNSServer
Specifies whether the IP address of a valid iSNS server
from which the iPBridge will attempt iSCSI initiator
discovery. Setting to 0.0.0.0 disables the iSNS server
lookup. Default is 0.0.0.0.
SpeedWrite
When enabled, improves the performance of WRITE
commands to SCSI devices attached to the iPBridge.
CHAP commands
To find the CHAP commands,
1 Click on the Manual Target Mgt menu item
2 Click on the Target Management page
3 Click on the iSCSI CHAP table entry next to the
iSCSI target you wish to use.
iSCSI CHAP
iSCSI CHAP controls whether CHAP (Challenge
Handshake Authentication Protocol) is used for the iSCSI
protocol. If CHAP is enabled, the target requires the
initiator to negotiate CHAP authentication using CHAP
secrets (passwords). An initiator may reject this
negotiation.
iSCSI Chap Secret
Specifies the incoming and outgoing secrets (passwords)
for iSCSI CHAP sessions. Secrets are case sensitive, 12
to 32 characters (16 for Microsoft iSCSI initiator), and
cannot contain spaces.
In and out secrets must be
different.
An
in secret is for authentication of the server to the
iPBridge. The iPBridge can store up to 32 in secrets.
An
out secret is for authentication of the iPBridge to the
server. There is only one out secret per target that cannot
be deleted.
iSCSI Target
Creates or deletes an iSCSI target name. The target
name acts as a suffix to the standard bridge iSCSI-
qualified name. The target name may not exceed 24
characters.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
3.3 Optional changes
Default values, even if you have not used the ExpressWizard, are appropriate for most configurations,
but may be modified.
Preliminary steps
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 25, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears.
View the default settings by clicking on each
element in the left hand menu, then use the
individual pages listed on the side menu to
make changes or use other features.
Modify passwords
1 Follow the Preliminary steps
2 Click Bridge.
The Bridge Configuration page is displayed.
The Administrator user name that you are
currently logged in with and the current read
only user name, if present, are displayed in
their text boxes.
3 Enter the Administrator (Admin) password
where indicated.
4 Enter appropriate information into the New
Admin Password, Confirm New Admin
Password or New Read Only Password and
Confirm New Read Only Password text
boxes.
5 Click Submit.
6 Go to the Restart page and restart the
iPBridge.
Set up a VLAN: Virtual Local Area Network
A Virtual LAN (VLAN) is a group of devices on
the same physical LAN which can communicate
with each other as if they were all on different
physical LANs. This creates a network that is
independent of physical location, allows grouping
of users into logical workgroups, increases
efficient use of resources, and adds security
options by allowing some users into the LAN and
keeping other users out.
You may create up to eight Virtual LAN IDs for
each Ethernet data port. Each VLAN ID is
assigned a VLAN name of up to 64 characters. If
no VLAN Id exists for a data port, VLAN is
disabled for that port.
1 Follow the Preliminary steps
2 Click on the Ethernet menu item.
3TheEthernet Port Configuration page
appears. Add a VLAN ID number and name in
the appropriate boxes.
4 Press Submit.
5 Go to the Restart page and restart the
iPBridge.
After rebooting, Virtual LAN takes effect.

14
Enhance performance
Note
If you used ExpressWizard to set up your
iPBridge, changing these parameters may
interfere with ExpressWizard settings.
Default values, even if you have not used the
ExpressWizard, are appropriate for most
configurations, but may be modified.
1 Follow the Preliminary steps.
2 On the iSCSI page, enable SpeedWrite.
3 On the Ethernet page, change MTU to 9014.
Note
If you change the MTU on the iPBridge, you
must enable jumbo frames on your initiator
and change the MTU on the initiator.
4 For Windows operating systems, use the ATTO
iSCSI performance configuration tool
(Windows only).
iSCSI performance configuration tool
(Windows only)
The ATTO iSCSI performance configuration tool
changes the Windows registry parameters for
Microsoft iSCSI Initiator and TCP/IP to enhance
overall data throughput.
1 From the CD which came with your iPBridge,
copy the Perftune.exe file to your hard drive.
2 Execute the program.
3 Click on Use ATTO Performance Settings.
Settings take effect on the next system reboot.
The following settings are affected:
FirstBurstLength
The maximum amount, in bytes, of unsolicited data an
iSCSI initiator may send to the target during the
execution of a single SCSI command including the
immediate data and the sequence of unsolicited Data-Out
PDUs which follow the command.
FirstBurstLength
cannot exceed
MaxBurstLength
ATTO value: 1048576 decimal 00100000 hex
MaxBurstLength
The maximum SCSI data payload, in bytes, in a Data-In
or a solicited Data-Out iSCSI sequence. A sequence
consists of one or more consecutive Data-In or Data-Out
PDUs that end with a Data-In or Data-Out PDU with the
F bit set to one.
ATTO value: 1048576 decimal 00100000 hex
MaxRecvDataSegmentLength
The maximum data segment length, in bytes, that a
transmitter (initiator or target) can receive in an iSCSI
PDU. The transmitter is required to send PDUs with a
data segment that does not exceed
MaxRecvDataSegmentLength of the receiver.
ATTO value: 1048576 decimal 00100000 hex
MaxTransferLength
The maximum number of bytes that may be transferred by
a single SCSI request block (SRB).
ATTO value 1048576 decimal 00100000 hex
SrbTimeoutDelta
The maximum amount of time, in seconds, before an SRB
request will time out.
ATTO value 300 decimal 0000012c hex
Tcp1323Opts
This parameter controls RFC 1323 time stamps and
window-scaling options. Time stamps and window
scaling are enabled by default, but can be manipulated
with flag bits. Bit 0 controls window scaling and bit 1
controls time stamps.
ATTO value: 1

15
ATTO Technology Inc. iPBridge Installation and Operation Manual
4 Remote system monitoring
You may set up the iPBridge to send notifications when certain events occur.
You may set up the iPBridge to send notifications
when certain events occur using the
Remote
Management
page of the ExpressNAV
interface.
You designate the person receiving notification of
conditions and the level of severity which prompt
notification using the Simple Network
Management Protocol (SNMP) or Email
notification.
For both methods, the severity level which is
report can be
critical, warning or all .
• Critical means only critical event notifications
are sent.
• Warning means only warnings and critical event
notifications are sent.
• All means warnings, critical events and
informational messages are sent.
SNMP
An agent resides in the iPBridge which takes
information from the iPBridge and translates it
into a form compatible with SNMP. If certain
conditions arise, the agent sends notifications
(traps) to a client.
Contact your network administrator for the MIB
software and appropriate MIB file for your
iPBridge.
1 Follow the Preliminary steps on page 13.
2 Click on Remote Mgt from the side menu. The
Remote Management page appears.
3 In the SNMP line, click on the enabled button.
4 In the SNMP Traps or SNMP Extended Traps
line, click on Enable. For details, refer to
SNMPTraps and SNMPExtendedTraps on
page xiii of the Appendix.
5 In the SNMP Trap Recipient IP addresses
section, enter the IP address of each person you
want to notify.