®
®
3Com IntelliJack Switch NJ220
User Guide
3CNJ220
Part No. 10016226 Rev. AA
Published June 2007
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CONTENTS
INSTALLING THE NJ220 INTELLIJACK
About the IntelliJack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Obtaining Optional Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Installing the IntelliJack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Checking the LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
INSTALLING THE CONFIGURATION MANAGERS
System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Installing the Local and Central Configuration Managers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Installing the Web Configuration Manager on a Windows 2000 machine . . . . . . . . . . . . . . . . . . . . . . . . . .21
USING THE LOCAL CONFIGURATION MANAGER
Initializing the NJ220 IntelliJack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Setting Location Information
Setting the Group Name
Setting the IP Address
Setting Advanced Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Changing the Password
Configuring for SNMP
USING THE CENTRAL CONFIGURATION MANAGER
Discovering NJ220 Devices on Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Viewing Device Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Network
Identification
Port Information
Product Information
Hardware Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Switch Status
Power Status
Statistics Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
General Counters
RMON Counters
Saving to a Log File
SNMP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
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Advanced Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Event Alerts
802.1X Settings
Changing Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
General Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Identification Settings
Hardware Settings
Priority & VLAN Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Port-Based Settings
Other VLAN Settings
Security Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Device Password
802.1X
SNMP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Event Alerts
Port-Based Configuration (Flow Control, AutoMDI(X), Data Rate Control)
Restoring Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Finding Computers Connected to IntelliJacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Upgrading the NJ220 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Viewing Log Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Viewing and Canceling Scheduled Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
TROUBLESHOOTING THE NJ220
Troubleshooting Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
TECHNICAL SUPPORT
Where To Go For Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Contact Us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
PRODUCT SPECIFICATIONS
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INSTALLING THE NJ220 INTELLIJACK
1
The 3Com NJ220 IntelliJack is a 4-port, managed Ethernet switch that fits into any
standard electrical wall outlet or data port opening. It brings switching capabilities
to any single port on an Ethernet network by allowing you to connect up to four
networking devices, such as computer, printers, and Voice Over IP (VoIP)
telephones to the network via one Ethernet port. You can use optional connectors
to connect one or two additional devices to separate network segments through
the same IntelliJack. All ports feature 10/100 Mbps auto-negotiation.
Power to the IntelliJack is provided through one of the following methods:
• Over the network via an integrated switch that supports Power Over Ethernet
• Over the network via an optional single-port or multi-port Ethernet power
supply
• Locally via an optional local power supply
NOTE: Power Over Ethernet, also known as in-line power, is a method to
provide power to equipment over an Ethernet cable, allowing a device to
receive both data and power from the same network cable. The NJ220 is ideally
powered by a switch or other Power Sourcing Equipment (PSE) that is IEEE
802.3af-compatible. The NJ220 can also be powered by some switches which
are not 802.3af-compatible. Consult the 3Com web site for more information.
You can manage the NJ220 IntelliJack using the included Central Configuration
Manager or Web Configuration Manager. You can also use a supported SNMP
management console as you would with any managed device on your network,
but greater management and control is available through the Configuration
Manager software. Management features include:
• Device discovery
• Port status (state, duplex, speed)
• Statistics
• Port control (port state, flow control, AutoMDI(X), frame rate limit)
• 802.1P QoS/Priority
• 802.1Q compatible VLAN
• VLAN tag add/remove
• Firmware upgrade
• Rate limiting
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2
CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
• MAC filtering
• 802.1x port security
• User-configured VLAN IDs for management packets
• Port-based “calendar” function
About the IntelliJack
The following diagram shows the front view of the IntelliJack:
1
Switched ports with LEDs
Allow up to four devices to be connected to the network.
A green LED indicates connection status when a device is
using a particular port.
Port number 1 is also a power-forwarding port; it can be
used with any standard networking device as well as to
power a VoIP telephone on a network that uses IEEE
802.3af-compatible Power Over Ethernet. An additional
LED indicates when the port is forwarding power to a
device connected to that port.
2
3
Slot for adapter plate
Can be fitted with an adapter plate, which can be installed
with up to two pass-through ports.
Adapter plate with
installed pass-through port
connector
Can be used for voice or other networking applications.
The port bypasses the functionality of the switch, allowing
you to set up a connection to a separate network segment
or to connect to an analog or digital PBX telephone.
The adapter plates are available from 3Com. However, you
must purchase the connectors from the manufacturer. See
“Installing the Adapter Plate and Pass-Through Ports” on
page 8 for more information.
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About the IntelliJack
3
4
5
LEDs
Indicates network connection status.
Indicates power status.
Power socket
Can be used to power the IntelliJack with a local power
supply (available for purchase from 3Com); required if
your network does not support Power Over Ethernet.
The following diagram shows the back view of the IntelliJack:
1
Ethernet uplink port
(RJ-45 female)
Connects the IntelliJack to the network.
Make sure the port on the network switch to which the
IntelliJack is connected is configured as a standard MDI-X port.
2
3
Slot for adapter plate Can be fitted with an adapter plate, which can be installed with
up to two pass-through ports.
Adapter plate with
installed
Connects the installed pass-through port to the network.
pass-through port
connector
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4
CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
Before You Begin
Before you begin installation, register your product at:
The IntelliJack is available in single- and 20-packs. Before you begin the
installation, make sure you have the following items, which are included with the
IntelliJack:
• 1.5 inch, 6x32 screws (2 per IntelliJack) for mounting the IntelliJack to the wall
or office cubicle.
• Male to male RJ-45 coupler cable (1 per IntelliJack) for connecting the Ethernet
cable from the network to the IntelliJack (required only if your network cable is
terminated with a female RJ-45 connector).
Additionally, the following items are shipped with the single pack:
• Compact disc with User Guide and Configuration Manager software.
• Adapter plates for installing connectors to use as pass-through ports. The
adapter plates accommodate connectors from suppliers including:
n
n
Panduit (RJ-45 and RJ-11)
Avaya (RJ-45 and RJ-11)
• Adapter plate screws (2) for mounting the adapter plate to the IntelliJack.
NOTE: The connectors for the adapter plates must be purchased from the
manufacturer. For a list of supported connectors, go to the IntelliJack section of
Obtaining Optional
Components
The IntelliJack works with the following optional components, all of which are
1-877-949-3266.
Component
Purpose
3C Number(s)
Adapter plates
For installing pass-through port connectors of
your choice that allow a direct connection to
another network segment or for connecting an
analog or digital PBX telephone. Available
adapter plates accommodate connectors for
the following manufacturers: AMP, Avaya,
Hubbell, Ortronics, and Panduit.
3CNJAP-PA-20
3CNJAPB-PA-20
3CNJAP-AV-20
3CNJAPB-AV-20
3CNJAP-AM-20
3CNJAPB-AM-20
3CNJAP-HU-20
3CNJAPB-HU-20
3CNJAP-OR-20
3CNJAPB-OR-20
Single-port
Ethernet power
supply
For providing Power Over Ethernet to locally
power a single IntelliJack.
3CNJPSE
Multi-port
Ethernet power
supply
For providing Power Over Ethernet to power
up to 24 IntelliJacks.
3CNJPSE24
3C17205
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Installing the IntelliJack
5
Component
Purpose
3C Number(s)
Local power
supply
For locally powering a single IntelliJack;
required if your network does not support
Power Over Ethernet.
3CNJPSL
VoIP telephone
power cable
For powering a VoIP telephone on a network
that uses Capacitive Power Discovery
Process-compatible Power Over Ethernet.
3CNJVOIPMOD-NBX
3CNJVOIPMOD-20
3CNJVOIP-CPOD
3CNJVOIP-CPOD-20
Extension ring
For ensuring that the IntelliJack is properly
mounted to a cubicle; required if the cubicle
opening:
3CNJEXTRING
n
Has a depth of fewer than 1.5 inches.
n
Does not support the NEMA-WD6
standard.
n
Does not have pre-drilled screw holes for
standard mounting.
Installing the
IntelliJack
Installing the IntelliJack consists of the following steps:
1 Set up the power supply (page 6).
2 Install the adapter plate and pass-through ports (page 8).
3 Plan the installation (page 9).
4 Set up the network cabling at your site (page 10).
5 Connect the IntelliJack to the network (page 10).
6 Mount the IntelliJack to the wall or office cubicle (page 11).
7 Connect the local power supply (page 12; optional) not required if your network
supports Power Over Ethernet or if you are using a single-port or multi-port power
supply).
8 Connect network devices to the IntelliJack (page 13).
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CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
The following diagram displays an overview of the recommended installation,
where the IntelliJack is being connected to an Ethernet network cable that is
terminated with a female RJ-45 connector. Detailed installation instructions are
included in the sections that follow.
Setting up the Power Power to the IntelliJack can be supplied one of the following ways:
Supply
• Over the network via an integrated switch that supports Power Over Ethernet.
• Over the network via a multi-port Ethernet power supply.
• Over the network via a single-port Ethernet power supply.
• Locally via a 3Com local power supply.
Before you begin the installation, determine which type of power supply the
IntelliJack will use.
NOTE: For a list of power supplies that support the IntelliJack, go to
CAUTION: Use only a power supply that is provided or approved by 3Com for
use with this IntelliJack. Failure to do so may result in damage to the IntelliJack,
or may result in a hazardous situation or personal injury.
Using an Integrated Switch with Power Over Ethernet
To use Power Over Ethernet, you must have a switch on the network that has
Power Over Ethernet integrated into it. You must then determine if it is
compatible with IEEE 802.3af.
Using a Multi-port Ethernet Power Supply
To use a multi-port Ethernet power supply, you must connect the power supply to
your network, as shown in the illustration.
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Installing the IntelliJack
7
The multi-port Ethernet power supply from 3Com connects to an existing Ethernet
or Fast Ethernet infrastructure with standard Category 5 or Category 5e UTP
cabling, and powers up to 24 IntelliJacks. See “Obtaining Optional Components”
on page 4 for ordering information. For complete installation instructions, see the
multi-port Ethernet power supply documentation.
Using a Single-port Ethernet Power Supply
To use a single-port power supply, connect the power supply to the network hub
or switch and to the IntelliJack, as shown in the following illustration. See
“Obtaining Optional Components” on page 4 for ordering information. For
complete installation instructions, see the single-port Ethernet power supply
documentation.
Using the 3Com Local Power Supply
To use the local power supply, make sure you have an electrical outlet near the
site where the IntelliJack will be installed. First plug the power cord into the
IntelliJack, then plug it into the electrical socket. See page 12 for more details.
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8
CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
Installing the Adapter Install the blank adapter plate, or if you want to use pass-through ports for
Plate and Pass-Through connecting an analog or PBX digital telephone or for setting up a connection to a
Ports separate network segment, purchase supported connectors and install them on
the appropriate IntelliJack adapter plate (included with the single pack; available
for purchase separately with the 20-pack).
For a list of connectors that are supported with the IntelliJack adapter plates, as
well as any corresponding installation instructions, go to the IntelliJack section on
NOTE: If you are not planning on installing the adapter plate and pass-through
ports, skip this section. Go to “Planning the Installation” on page 9 to begin the
installation.
1 Pull the network cable(s) from the wiring closet to the location of the IntelliJack.
2 Thread the network cable(s) through the empty slot on the IntelliJack.
3 Terminate the end of the network cable(s) with the connector(s) you purchased
separately.
Refer to the connector manufacturer’s instructions for terminating the cable. Be
sure to test end-to-end system functionality and verify that it is working.
4 Snap the connector(s) into the appropriate adapter plate.
Each adapter plate is labeled with the name of a connector’s manufacturer. Be
sure to use the adapter plate that matches the manufacturer of your connector(s).
5 Mount the plate to the IntelliJack using the two adapter plate screws provided.
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Installing the IntelliJack
9
Planning the Installation When installed, the back of the IntelliJack extends into a wall or cubicle opening
1.5 inches. Because the depth of some wall and cubicle openings differ, observe
the following requirements and recommendations before installing the IntelliJack:
• Make sure the wall or cubicle opening where the IntelliJack is being installed
complies with the NEMA-WD6 standard, as described below.
• Make sure the distance between the back of the IntelliJack and the inside of
the wall or cubicle opening is at least 1.5 inches (3 inches is recommended).
NOTE: Some cubicle openings have a depth of 1.2 inches. In this case, install
the IntelliJack using the extension ring (available for purchase separately; see
“Obtaining Optional Components” on page 4) to obtain the minimum 1.5-inch
depth.
If installing into a wall junction box, make sure there is enough space between
the back of the IntelliJack and the inside of the junction box to maintain an
acceptable bend radius on the cable. If you encounter interference or need
additional clearance between the IntelliJack and where it sits inside the junction
box, use the extension ring.
• To ensure proper horizontal cabling functionality, adhere to the following
network cabling standards during installation:
n
ANSI/TIA/EIA-568
Commercial Building Telecommunications Cabling Standard
n
ANSI/TIA/EIA-569
Commercial Building Standard for Telecommunications Pathways and
Spaces
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CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
Setting up the Network The network cabling at your site (from the wiring closet to the wall or cubicle
Cabling at Your Site opening) may already be installed. If it is not, install the cabling following these
general guidelines.
CAUTION: It is recommended that a professional cable installer performs these
procedures. Be sure to adhere to local safety and regulatory codes during the
cable installation.
1 Connect one end of an Ethernet cable to your network. Usually, this connection is
done in a network wiring closet, via the patch panel.
2 Terminate the other end of the cable at the location where the IntelliJack is being
installed (using either a female or male RJ-45 connector).
Refer to the connector manufacturer’s instructions for terminating the cable. Be
sure to test the connector and verify it is working.
Connecting the The method for connecting the IntelliJack to the network is determined by how
IntelliJack to the your network cable is terminated (as described in the previous section, “Setting up
Network the Network Cabling at Your Site”).
• If the end of the cable is terminated with a female RJ-45 connector, use the
RJ-45 coupler cable included in the package to connect the IntelliJack to the
network cable (recommended installation.)
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Installing the IntelliJack
11
• If the end of the cable is terminated with a male connector, connect the
network cable directly into the Ethernet uplink port.
Mounting the IntelliJack After connecting the IntelliJack to the network, use the two provided screws to
mount the IntelliJack in any standard NEMA-WD6 cubicle opening or wall outlet.
If the cubicle or wall opening has a depth of fewer than 1.5 inches, does not
support the NEMA-WD6 standard, or does not have pre-drilled screw holes,
mount the IntelliJack using the extension ring, as shown below.
NOTE: The extension rings are designed to stack on top of one another. If you
need more than 0.3 inches of clearance, simply snap an additional extension
ring to the back of the IntelliJack.
CAUTION: Make sure the vents along the edges of the IntelliJack faceplate are
clear of any obstructions. If necessary, install the extension ring on recessed
openings to allow airflow to vents.
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12
CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
Connecting the Local If your network does not support Power Over Ethernet, or if you are not using a
Power Supply (Optional) single-port or multi-port Ethernet power supply, you must purchase a local power
supply from 3Com (see “Obtaining Optional Components” on page 4). To
connect the local power supply to the IntelliJack, please follow these steps:
1 Route the power cable through the strain relief of the IntelliJack (as shown in the
diagram below).
2 Securely mount the IntelliJack on a wall.
3 Plug the power cable into the IntelliJack.
4 Secure the local power supply and cable to the wall.
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Checking the LEDs
13
5 Plug the local power supply into the power source.
WARNING: Use the local power supply available from 3Com. Failure to do so
may result in damage to the IntelliJack, or may result in a hazardous situation.
Connecting Devices to After the IntelliJack is installed and mounted, connect your networking devices
the IntelliJack (such as computers, printers, etc.) to any of the four switched ports on the front of
the IntelliJack.
If you installed the adapter plate with pass-through ports, connect the appropriate
device(s) to the port(s).
Checking the LEDs
You can verify the IntelliJack installation by checking the LEDs.
LED
Description
n
n
On—The IntelliJack is connected to the network and a link has
been established.
Off—There is no connection to the network.
(LAN)
n
On—The IntelliJack is receiving power (local or via the network).
When you first connect power to the IntelliJack, there will be a
delay of approximately 5 seconds. The power LED light will blink
several times before remaining solid on.
(Power)
n
Off—The IntelliJack is not receiving power.
Additionally, each of the switched ports has a green LED which lights when a
device is connected. Port 1 also has an amber LED which lights when the
IntelliJack is forwarding power to a connected device.
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14
CHAPTER 1: INSTALLING THE NJ220 INTELLIJACK
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INSTALLING THE
CONFIGURATION MANAGERS
2
Once you have installed the NJ220 hardware, you need to configure it for use on
your particular network. To configure the NJ220, install the Local and Central
Configuration managers.
NOTE: You will use the Local Configuration Manager for initial configuration of
the NJ220 on your network. It’s usually easiest if you load this software on a
laptop and use it to configure IntelliJacks as you install them.
The NJ220 Central Configuration Manager is used for advanced configuration
and management of one or more NJ220s on your network. This software
should be installed on the machine you plan to use to manage your NJ220s
from a remote location—perhaps the same console you use for SNMP
management.
System Requirements
The machine you install the software on should meet the following requirements:
• Pentium processor
• Minimum of 15MB disk space
• Windows 2000, Windows XP Pro, or Windows NT 4.0 with Service Pack 6
installed (While Windows 95 and Windows 98 are not recommended
operating systems for use with management platforms, the Configuration
Manager software may work with them) or Windows Vista.
Installing the Local
and Central
Run the following steps to install the Configuration Manager software:
Configuration
Managers
1 Insert the Configuration Manager software CD into your Windows 2000,
Windows XP Pro, Windows NT, or Windows Vista computer.
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16
CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS
2 If your computer is configured to Auto-Play CDs, the installation will start
automatically. If not, double-click the setup.exe icon on the CD, and you will see
this window:
3 Click Next to continue.
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Installing the Local and Central Configuration Managers
17
4 Carefully read the license agreement. If you agree, click “Yes, I accept” and Next
to continue.
5 The installation will present Readme Information. This is also found in the
Readme.txt file on the installation CD. Please read the information and click Next
to continue.
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18
CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS
6 Enter your user and organization names. You can also specify whether you want
the management programs to be available to just you or to anyone that may use
the computer you’re installing these applications on. Select the option you prefer
and click Next.
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Installing the Local and Central Configuration Managers
19
7 The program files will be installed in the directory C:\Program
Files\3Com\IntelliJack. If you want to change the location of the installation, click
Change. Otherwise click Next to accept the default location and continue.
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20
CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS
8 Select a typical or custom setup and click Next. The Typical installation will install
both the Local Configuration Manager and the Central Configuration Manager on
your system. The Custom installation option lets you install just one of the
programs if you wish.
9 Review the settings you selected and click the Install button.
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Installing the Web Configuration Manager
21
10 When the installation has completed, click the Finish button to close the
installation utility.
The installation utility will create two shortcut icons on the Desktop--one for the
Local Configuration Manager and one for the Central Configuration Manager.
You can also launch the programs from a program group you can access from the
Start menu. The program group folder is labeled 3Com IntelliJack and can be
found under the Programs menu.
Installing the Web
Configuration
Manager
NJ220 IntelliJacks are capable of being discovered and managed through a
standard web browser. The Web Configuration Manager lets you access and
control IntelliJacks from any Web-enabled computer on your network.
In order to enable the Web Configuration Manager you will need the following:
• A servlet-compliant web server or stand alone servlet engine
• Internet Explorer 6.0 or later; Netscape 7.0 or later web browser
• NJ220 Installation CD
The following instructions assume a scenario where the operating system being
used is Microsoft Windows 2000 and the servlet engine is Apache Tomcat,
Version 4.1. You may have to slightly alter this process if your specific
environment is different. Note that Apache Tomcat requires Sun Microsystems’
Java Development Kit (JDK) 1.4. These are available at no charge from Sun.
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CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS
To install the 3Com IJ/NJ Web Configuration Manager on a Windows 2000
computer, follow these steps:
1 If your machine does not have the Java Development Kit (JDK) installed, download
the installation program from Sun’s Web site and install JDK v1.4. You can find
JDK 1.4 at the following URL:
Scroll down the to the “Download J2SE v 1.4.2” section and choose to download
the SDK executable file for Windows installation. Do not choose the JRE
executable file.
NOTE: Make a note of the directory in which you install the JDK.
NOTE: This file is approximately 150 MB. At the time of download, Sun will tell
you the amount of hard drive space this file requires. Make sure you have the
required space before proceeding.
2 If your machine does not have the Apache Tomcat servlet engine, download the
installation program from the Apache web site and install Tomcat on your
machine. We currently recommend that you install Version 4.1.27 of Tomcat. You
can find the Apache Tomcat servlet engine at the following URL:
Scroll down to the ‘Tomcat’ section and download the ‘4.1.27.exe’ file.
NOTE: Make a note of the directory in which you install this program.
3 You need to set the ‘JAVA_HOME’ environment variable to the directory where
you installed the JDK. To set this variable on Windows 2000, go to the Start menu
and select Settings>Control Panel>System>Advanced>Environment Variables.
Under System Variables section on the Advanced tab, click New. In the dialog box
that appears, enter JAVA_HOME in the “variable home” field and the directory
path to the JDK in the “variable value” field. Click OK.
4 Copy the ‘CB.DLL’ file from the NJ220 Installation CD into the Windows system
directory (C:\WINNT\SYSTEM32).
5 Copy the ‘buildDirs.bat’ file from the NJ220 Installation CD to the root directory of
the drive in which you installed Tomcat.
For example, if you installed Tomcat in the C:\Tomcat directory, copy buildDirs.bat
to the C:\ directory.
6 Open a DOS command window, navigate to the directory in which you copied the
‘buildDirs.bat’ file, type ‘buildDirs.bat’ and press Enter. At this point, the following
directory structure will be created: c:\3comnjwbm.
7 Copy the 3ComIJNJ.war file from the NJ220 Installation CD into the ‘webapps’
subdirectory under the Tomcat installation directory. For example, if you installed
Tomcat in the C:\Tomcat directory, copy 3ComIJNJ.war into the
C:\Tomcat\webapps directory.
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Installing the Web Configuration Manager
23
8 If the ‘webapps’ subdirectory under the Tomcat installation directory already
contains a subdirectory called ‘3ComIJNJ,’ delete this directory.
9 Start Apache Tomcat. To do so, open a DOS command window, go to the ‘bin’
subdirectory under the Tomcat installation directory, type ‘startup’, and hit Enter.
A new command window will open. At this point, your server should be
configured and running.
Now that your server is configured, you can use the Web Configuration Manager
from any Web-enabled machine. To do so:
10 Open up your Internet Explorer or Netscape browser and point it to the following
URL:
http://<Your_Server_IP_Address>:8080/3ComIJNJ/main/index.jsp
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CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS
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USING THE
LOCAL CONFIGURATION MANAGER
3
Initializing the NJ220
IntelliJack
Once you have installed the NJ220 hardware on your network and the Local
Configuration Manager software on your computer, you need to perform an
initial configuration of the IntelliJack.
1 The first step is to connect your computer to the NJ220 that you are installing.
Attach an Ethernet cable from a computer running the Local Configuration
Manager software to any one of the four personal area network (PAN) ports on
the front of the NJ220.
2 Click on the desktop shortcut icon labeled IJ NJ Local Config Mgr to start the
program. When it launches, you will see a window like this:
3 The MAC address, Serial Number, and Firmware Version of the currently
connected NJ220 will appear at the top of the window. If you connect to another
NJ220, you must click the Query button to refresh the window.
If you are not connected to any IntelliJack, the field will display the message Not
Connected. If the Not Connected message appears, check your connection to the
IntelliJack and click the Query button.
4 Make sure the General tab is selected.
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26
CHAPTER 3: USING THE LOCAL CONFIGURATION MANAGER
5 Enter Location Information for the NJ220 you are currently configuring. This field
can help you and other network managers identify this IntelliJack in the future.
You may enter any information you like (up to 128 characters), but we
recommend that you enter a logical, easy to follow description, such as “Building
A, 3rd floor, room 315, West wall.”
6 Enter a Group Name for this IntelliJack. This can be any name you wish. With the
Central Configuration Manager, you can perform management tasks on all
IntelliJacks with the same group designation.
7 Select the method the NJ220 should use to obtain an IP address. The NJ220 can
either get an IP address from an existing DHCP server on your network, or you can
specify an address. If you elect to specify your own address, you should enter the
IP Address, Subnet Mask, and Default Gateway information in the appropriate
fields.
NOTE: By default, the NJ220 is configured to automatically obtain an IP address
from a DHCP server. If no DHCP server exists, or if the NJ220 cannot obtain an
IP address, it will default back to its previously configured static IP address. If it
had previously been assigned an IP address, it will default to that one. If it did
not, it will default to the static IP address of 192.168.1.252.
8 If you wish, check the box next to Lock IP Address. Selecting this option will
ensure that the IntelliJack will always use a particular address.
WARNING: If you lock an IP address and reserve it for this IntelliJack, make sure
you configure your DHCP server so it won’t distribute that address to other
devices.
9 Click the Configure button and the Local Configuration Manager will ask you to
enter the password for the device. If you haven’t changed the password, you
should enter the default password, which is “password” (without the quotes).
Your changes are sent to the NJ220 and will become effective immediately.
Those are the only steps required to initialize your NJ220 IntelliJack.
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Setting Advanced Options
27
Setting Advanced
Options
If you want to change the default password of the NJ220 or change SNMP
community strings, you can configure these settings from either the Local
Configuration Manager or the Central Configuration Manager (covered in the
next chapter). In the Local Configuration Manager, both settings are found under
the Advanced tab.
1 Select the Advanced tab on the IntelliJack Local Configuration Manager window.
2 To change the IntelliJack’s configuration password, click on the box next to
Change Password. Then enter the new password in both password fields. (You
must enter the password twice to ensure you type it correctly.) The password you
select can be any combination of letters and numbers between 8 and 32
characters.
3 To configure the NJ220 for management with an SNMP console, select the SNMP
Configuration box. Enter the GET Community string and SET Community string in
the appropriate fields. Each field lets you enter any combination of letters and
numbers up to 32 characters.
4 Click the Configure button and the Local Configuration Manager will ask you to
enter the password for the device. If you haven’t changed the password, you
should enter the default password, which is “password” (without the quotes).
Your changes are sent to the NJ220 and will become effective immediately.
NOTE: You should change the password to ensure that no one else can
re-configure your system. Make sure you remember the new password you set.
If you forget the new password, you will not be able to perform any
other configuration tasks unless you send the device back to 3Com.
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CHAPTER 3: USING THE LOCAL CONFIGURATION MANAGER
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USING THE
CENTRAL CONFIGURATION MANAGER
4
You should use the Local Configuration Manager to initialize each of the NJ220
IntelliJacks installed on your network. Once you have completed that step, you can
manage all of them with the Central Configuration Manager.
Install this program on any computer on your network you want to use as a
central management console (See chapter 2, “Installing the Configuration
Managers” for help). You can use the same machine that has your SNMP-based
management platform. The Central Configuration Manager will be able to
configure and manage all of the IntelliJacks that reside on your network.
We recommend that you keep the Central Configuration Manager (CCM) running
on your machine. Information such as traps and alerts are sent tot he CCM on a
periodic basis. If you shut off the machine or close the configuration manager, you
will not be able to receive this information.
Discovering NJ220
Devices on Your
Network
In order to manage the NJ220 IntelliJacks on your network, the Central
Configuration Manager needs to include them in its database. The easiest way to
add new NJ220 IntelliJacks to the database is to use the device discovery tool
included in the Central Configuration Manager.
The first time you run the Central Configuration Manager, it will automatically
take you to the Discovery window as shown under step two below. To discover
new devices on your network, run the following steps:
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
1 Open the Central Configuration Manager by double-clicking on the IJ NJ Cent
Config Mgr desktop icon. When it launches, you will see a window similar to this
one:
2 Select Discovery from the Devices menu or click the Discover button on the
toolbar. The following window will appear:
NOTE: The default subnets are the ones your machine is connected to.
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Discovering NJ220 Devices on Your Network
31
3 You can discover new devices based on a specific subnet or on a specific range of
IP addresses.
a To discover devices by subnet, select that option on the screen. Click the Add
button to add a new subnet to the discovery list. The following box will appear:
Fill in the Subnet and Mask fields and click OK.
or
b To discover devices within a certain IP range, select that option on the screen
and complete the From and To fields.
4 If the box next to “Delete all devices in the existing list” is checked, the discovery
process will replace all of the devices in your current database with the new
devices it discovers. If unchecked, the discovery process will add newly discovered
devices to the current database.
5 Click OK to start the discovery process.
The device discovery tool will return the following information from the NJ220
IntelliJacks on your network:
• IP address
• MAC address
• Subnet address
• Group name
• Location information
• Firmware version
You can sort this information in ascending or descending order.
NOTE: Discovered devices are automatically added to the default database.
This default database will open automatically when you launch the Central
Configuration Manager. If you like, you can keep several database files, each
with its own list of devices. For example, you may want a separate database for
each subnet you manage. To save a database file or open another database file,
select the Open Database or Save Database As option from the File menu.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
You can view discovered devices many ways. On the left side of the toolbar, you
can see a drop down box with options for either Subnet, Firmware Ver, or Group
Name. The option you select in this box determines how the views are displayed in
the left pane of the window.
When Subnet is selected (the default option), you will see a list of IP subnets to
choose from. Selecting Network will show all of the discovered devices in the
database. If you select a particular subnet, only the devices in that subnet will be
displayed.
When Firmware Ver is selected, you will see a list of the different firmware
versions loaded on the devices. This view is particularly useful if you want to select
only the devices with an old firmware version so you can perform an upgrade.
When you select Group Name from the drop down list, the Central Configuration
Manager will present a list of the different group names you have specified.
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Viewing Device Properties
33
Viewing Device
Properties
Once the database is populated with NJ220 IntelliJacks on your network, you can
begin to manage those devices. The main window of the Central Configuration
Manager shows a list of devices in the current database with the information
retrieved during the discovery process. You can view and configure the properties
for a single NJ220 using this window. To configure multiple devices at one time,
see “Changing Device Configuration” on page 43. To get more detailed
information about a device, you should check its properties.
The process for configuring one or more IntelliJacks is the same. You choose the
changes or configurations you wish to make by selecting them from the various
tabs in Device Properties (for changes to a single IntelliJack) or Configure (for
single or multiple IntelliJacks). When you have finished making changes, click
“Apply” or “OK”. You will be asked for your password. The configuration
changes will not be made to the IntelliJack until your password has been correctly
entered.
1 Select a IntelliJack from the devices list.
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34
CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
2 Select Property from the Devices menu or from the toolbar. You can also open this
window by right-clicking your mouse and selecting Property.
General Tab
3 With the General tab selected, you can view and edit information about the
device such as the IP address, subnet mask, default gateway, and whether it uses
a static IP address or gets its address from a DHCP server. You can also view and
edit the IntelliJack’s Group Name and Location.
4 Click Apply to save any changes you make to the fields in this window.
Port Information
5 In the middle of this window you’ll see information about each of the four PAN
ports on the front of the IntelliJack. You can check to see if the port is Enabled or
Disabled, if there is a network link, its priority, whether or not it’s part of a virtual
network (VLAN), its 802.1x security setting, if it’s running at half or full duplex,
and what speed it’s set for.
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Viewing Device Properties
35
You can double-click on any of the ports to find out more information or
configure that particular port.
Click OK to save your changes or Cancel to discard them.
Product Information
6 Under the Product Information box, you can see the current firmware version of
the IntelliJack, the Product Name, and the Serial Number.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
Hardware Settings
7 Click on the Hardware Settings tab to view status information about the switch.
Several fields in this window can be edited, a few cannot. You can change the
values of the fields with drop-down lists: Priority Schedule Policy, LAN Port Egress
Mode, LAN Port Ingress Mode, Max Frame Size, Counter Mode, and Power
Forwarding.
NOTE: For help determining the best configuration options for your system, see
the Changing Device Configuration section.
8 Simply select the value you wish to change from the drop-down list of options.
NOTE: You can click Apply at any time to save the changes you have made. But
be sure to click Apply after you have finished making all your changes.
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Viewing Device Properties
37
9 Click the ATU Table button to make changes to the NJ220’s ATU table. The screen
you see allows you to display all MAC addresses that have been plugged into that
IntelliJack or just the ones that you have “locked down” to it. You can refresh the
list, add MAC addresses to it, edit existing ones or delete entries in the ATU table.
The Address Translation Unit (ATU) performs MAC address searching, learning,
and aging functions for all ports of the NJ220 IntelliJack. By default, the ATU table
allows a total of 512 entries and an aging time is 304 seconds for each entry.
The NJ220 IntelliJack lets you manage its ATU table. You may want to know
which MAC addresses have been plugged into a particular IntelliJack. You may
want to associate a MAC address with selected ports, so the unselected ports will
not receive frames from this MAC address. You may want to set a certain priority
level to the frames associated with the MAC address. Finally, you may want to
lock down a MAC address so that it is never dropped from the ATU table. This
last operation is referred as MAC address filtering and you can lock down up to 32
MAC addresses into the ATU. All of these configurations are handled through the
Properties page, since an ATU table is related to a specific IntelliJack.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
10 The NJ220 IntelliJack also lets you manage its VLAN table. To access the VLAN
table, click on the Manage VLAN Table button. The screen you see allows you to
display all the VIDs that have been assigned to that IntelliJack.
You can refresh the list of VIDs or add to it. You can edit existing VLAN settings,
tagging schemes and port associations by clicking the Edit button.
The VLAN table is a record of the VLAN settings which have been configured for a
particular IntelliJack. You may want to know which ports have been assigned a
VLAN ID (VID), whether packets are tagged or untagged and whether the ports
are associated with one another. All of these configurations are handled through
the Properties page, since a VLAN table is related to a specific IntelliJack.
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Viewing Device Properties
39
Statistics Log
11 Click on the Statistics Log tab.
From this view you can see statistics about the number of good or bad packets
each port has received and transmitted, based on how you have configured the
Counter Mode setting (see step 7 on page 36).
The bottom half of the window shows Remote MONitoring (RMON) counters for
the LAN port and each of the four PAN ports on the IntelliJack. RMON counters
are extensions to the Simple Network Management Protocol (SNMP) that provide
comprehensive network monitoring capabilities (see appendix C, page 71 for
detailed information).
12 To load the counter information from the IntelliJack, click the Read button.
This window lets you monitor the traffic through your network by displaying
statistics for many types of packets. The left side shows Ingress counters for
packets coming into the IntelliJack’s port. The right side shows Egress counters for
packets leaving the port.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
You can reset all counters to zero by clicking Clear.
To save device data to a log file, click Get Device Log. This will prompt you for a
filename and location to save the log file.
NOTE: The device log records information regarding watch-dog timer errors or
other abnormalities. If, for example, the IntelliJack has unexpectedly rebooted,
the event will be recorded in the device log. 3Com Customer Support can use
information in the device log to help with troubleshooting. We recommend
that you do not attempt to use this log.
SNMP Settings
13 Click on the SNMP Settings tab to see the following window:
14 You can view and edit the SNMP Community String settings and Trap settings for
this particular NJ220.
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Viewing Device Properties
41
15 To edit a Trap Destination, enter the IP address of your SNMP management
console in the field. This eliminates the need to build a Trap Destination Table via a
Management Information Database (MIB) browser.
Advanced Settings
16 Click on the Advanced Settings tab to see the following window:
17 You can view the Event Alert Level and 802.1X Settings configured for this
particular NJ220. 802.1X is a security protocol for LANs that relies on the
Extensible Authentication Protocol (EAP) to pass messages to RADIUS
authentication servers.
NOTE: For help configuring SNMP and 802.1X settings for your system, see the
Changing Device Configuration section on page 43.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
Different Alert Levels notify you of specific events happening with the IntelliJack.
Each level above 0 provides different types of event alerts as described below:
Alert Level
Notifying Event
Level 0: Disable all alert messages
Level 1: Allow critical alerts
None
Device Power Failure/Reboot
Abnormal Reboot
IP Address Change
Device Power Failure/Reboot
Abnormal Reboot
Level 2: Allow standard alerts
Level 3: Allow all alerts
IP Address Change
Unauthorized Access
Device Power Failure/Reboot
Abnormal Reboot
IP Address Change
Unauthorized Access
Normal Reboot
NBX phone plugged in
NBX phone removed
Next to the Event Alert Level field is a box labeled Receive Alert. If you are running
the Central Configuration Manager on more than one machine in your
organization, the Receive Alert box will only be active for the last CCM that
discovered the device. The box will be grayed out on the CCMs of all other
machines.
18 Click Apply to save any changes you make, and a configuration summary dialog
box will appear. Verify the information and click OK.
19 Click Exit to close the Device Property window.
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Changing Device Configuration
43
Changing Device
Configuration
Many of the properties that you can view from the Device Property windows can
be changed from the Device Configuration window. Here’s how to use this
feature:
1 Select one or more IntelliJacks from the devices list.
NOTE: It is possible to configure multiple IntelliJacks at the same time.
2 Select Configuration from the Devices menu or the toolbar, or right click on a
device and select Configuration from the pop-up menu.
NOTE: To make configuration changes to a IntelliJack from the Central
Configuration Manager, the NJ220 must be part of the device database. See
the section on Discovering NJ220 Devices on Your Network for information
about including new devices in the database.
You must also be able to communicate with the device from your workstation
in order to configure it. If you can’t communicate with the device at this time,
you will receive an error message.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
This window has five tabs across the top--General Configuration, Priority & VLAN
Configuration, Security Configuration, SNMP Configuration, and Advanced
Configuration. Check the box next to any setting you want to change from within
these five areas.
The bottom of the window has buttons labeled Load and Save. The Save
operation lets you save an IntelliJack configuration profile. You can then use the
Load button to apply the configuration profile to one or more IntelliJacks.
If you wanted to send a single configuration to one or more IntelliJacks, you
would make the configuration changes in this window and click Save. Then you
could select a list of IntelliJacks from the main Configuration Manager window
and click Load, choose the file, and click Okay. This would send the configuration
to all of the IntelliJacks that you selected.
General Configuration
3 Make sure the General Configuration tab is selected.
Identification Settings
4 To change or set the Group Name, check the box next to that field. You can set a
Group Name to anything you want, up to 128 characters.
5 Change or set the Location Name by checking the box next to that field and
entering up to 128 characters.
6 Configure the DHCP setting to the desired state.
Hardware Settings
7 Change the Port state of any of the IntelliJack’s ports by selecting the Port tab and
checking the box next to the characteristic you want to modify. Then select a
value from the drop list.
Forwarding (Enable) is the default setting for the Port State. The other option is
Blocking (Disable). Forwarding (Enable) allows traffic to pass through the
individual ports. By setting the Port State to Blocking (Disable), you can block any
traffic from passing.
You may want to set the Port State to Blocking (Disable) when you want to restrict
access to your LAN at the location where the IntelliJack is installed. This might be
an appropriate option in a public use area such as a lobby, conference room, or
classroom. Using the Calendar function, you can schedule the Port State for
Forwarding (Enable) or Blocking (Disable) at specified times and dates.
8 To change the Link State setting, click the box and select an option from the drop
list.
Auto Negotiation is the default setting and the de facto setting for most network
equipment because it is the most flexible option. It automatically configures a
networked device based on the speed and duplex of the upstream device it is
plugged into. This is especially useful when you do not know the configuration
(speed/duplex) of all devices connected to the network.
Be advised, however, that not all network interface cards (NICs) use the standard
auto-negotiation algorithm, and it may be necessary to force the speed and
duplex of the PAN port to match the speed and duplex of the attached NIC.
9 The next two settings apply not to a specific port, but to the IntelliJack as a whole.
By default, the Central Configuration Manager will display a count of good
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Changing Device Configuration
45
transmissions in the Property window because it is unlikely that the IntelliJack will
drop any Ethernet Packets.
If you believe that the IntelliJack is dropping Ethernet packets, you may want to
configure the Counter Mode to count received errors (Rx Errors) and transmission
collisions (Tx Collisions). This will give you a good sense of whether packets are
actually being dropped.
10 To change the Power Forwarding setting, click the box and select an option from
the drop list.
IEEE 802.3af is the recognized standard for Power over Ethernet (POE) and the
default setting. More and more network devices that are POE capable are
adhering to this standard.
The IntelliJack’s Power over Ethernet capability also lets you forward power to a
standards-compliant device plugged into Port 1 of the NJ220. The default setting
of the NJ220 is auto-detect. We recommend that you keep this setting as part of
your configuration to ensure that power will only be forwarded to devices capable
of receiving it.
The IEEE802.3af standard requires a powered device to present a signature to the
power sourcing equipment. The power sourcing equipment will check this
signature and will only apply power to the line when it sees the correct signature.
If you want to ensure that power will not be forwarded at all, however, you could
select Force power OFF to any device connected to Port 1.
Select Force power ON if you always want to apply power to any device plugged
into Port 1. This option would let you power devices plugged into Port 1 that do
not have the signature required by IEEE802.3af-compliant power sourcing
equipment.
WARNING: By forcing power ON, you may damage equipment that is
inadvertently plugged into Port 1, such as a device that is not designed to
handle 48V.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
Priority & VLAN
Configuration
11 Click the Priority & VLAN Configuration tab along the top of the Device
Configuration window to view these settings:
Port Based Settings
12 To change the Port Based Settings, first select the Port’s tab you want to make the
changes to.
13 To change the Look-up Scheme from the default of Use Both, click the box and
select an option from the drop list.
Both the Use IEEE 802.1p Traffic Class Field and Use IP TOS, DiffServ fields look-up
schemes examine Ethernet packets to determine their prioritization. The former
looks at one portion of the packet, effectively making it a Layer 2 tool. The latter
looks at a different part of the packet, effectively making it a Layer 3 tool.
The Look-up Scheme is part of the prioritization of Ethernet packets. Prioritization
determines which packets clear the buffer first. If you didn’t care about the
prioritization of packets, you would choose None. If you wanted to prioritize voice
packets on Port 1, for example, you would choose another option.
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Changing Device Configuration
47
14 The default setting for the Default Priority Level is 802.1p Priority 0 or 1. You can
change this setting to Priority 2 or 3, Priority 4 or 5, or Priority 6 or 7.
The IntelliJack has four traffic queues with two priorities per queue. The lowest
numbers (0 and 1) have the lowest priority. The default priority traffic is called
“Best Effort” and serves as a baseline priority for all standard Ethernet traffic.
If you want to assign a higher priority to traffic on a particular port (voice traffic,
for instance), you can do so. The higher the number the higher the priority (Priority
6 or 7 is the highest). The IntelliJack will send higher priority traffic ahead of lower
priority traffic to improve the quality and throughput from that particular port.
15 You can associate any of the four ports with any other ports on this IntelliJack to
form a VLAN group. You can specify the tag schemes for the VLAN you create.
You can set the VLAN ID (VID) field to any number between 0 and 4094. The
default setting is 1, which is the common practice. If all equipment is set at VID 1,
you can communicate across all ports.
Since VLANs are used to separate network traffic to make it more manageable
and secure, you would change the VID of the individual ports to meet the needs
of your network.
In a classroom setting, for example, you may want the teacher to be on a separate
VLAN than the students. You could assign VID 10 to Port 1 of the IntelliJack for
the teacher and VID 20 to the other ports.
NOTE: The VID of a port must match the upstream switch VLAN assignments. If
the IntelliJack’s VID assignments do not match the upstream switch and “add a
VLAN tag” is set in the Egress rule, then the traffic that passes from the
IntelliJack to the LAN will be dropped at the upstream switch port.
16 To change the VLAN mode setting, click the box and select an option from the
drop list. You can choose to Disable the VLAN. In this mode, ingress frames are
forwarded through default switching rules.
You can also choose Enable unrestricted VLAN. In this mode, the port is associated
with the current VLAN ID you have set. Frames ingressed into this port without a
VLAN tag or with the same VLAN ID are forwarded within the VLAN. Frames with
a different VLAN ID are forwarded according to default switching rules (i.e., based
on the destination MAC address). Management packets are able to pass through
this port on this setting.
Finally, you can choose Enable restricted VLAN. In this mode, the port is associated
with the current VLAN ID you have set. All frames ingressed into this port are
forwarded within the same VLAN, and management packets are blocked on this
port.
Other Priority & VLAN Settings
17 Click the box and select from the drop list to change the Priority Schedule Policy.
The default setting is 8,4,2,1 weighted fair queuing scheme.
8,4,2,1 refers to the number of bytes removed from the IntelliJack’s buffer. 8
bytes of the highest priority traffic are removed from the buffer first, then 4 bytes
from the second most important, 2 bytes from the third, etc. This is the most
common priority scheme because it ensures that important traffic is prioritized but
still allows traffic flow for all ports.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
In a strict priority scheme (the setting’s other option), all highest priority traffic will
be removed from the buffer. After it is removed, the next priority traffic type
would be removed, and so on. This ensures that the most important or time
critical data is passed first, but it could potentially slow traffic from other ports.
18 You can change the Outgoing (to LAN) tag scheme for the IntelliJack. By default,
frames are transmitted unmodified. This setting ensures that you will not risk
losing communication with upstream switches due to misaligned VLAN IDs (VIDs).
If you want to configure traffic from a port on the IntelliJack, you can add a tag to
the frame. This lets you separate traffic into different VLANs.
19 You can also change the Incoming (from LAN) tag scheme. By default, all frames
are received unmodified. By receiving frames unmodified, you will not risk losing
communication between upstream switches and the devices connected to the
IntelliJack due to misaligned VIDs.
If an upstream switch is sending a tagged packet but the device connected to one
of the IntelliJack ports does not need the tag information, you can remove the tag.
20 It is common practice to set the VLAN ID (VID) of the management port to VID 1,
and this is the default value.
The management port is the port through which all commands to and from the
IntelliJack are communicated. You may want to separate management traffic from
other network traffic by assigning the Management Port of the IntelliJack to a
different VID. You should make sure that the VID for the management port of the
IntelliJack is the same as the VID for management ports of upstream devices.
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Changing Device Configuration
49
Security Configuration
21 Select the Security Configuration tab to set the security options of the NJ220
IntelliJack.
Password
22 You can change the device password (the default password is “password”), and
either enable or disable local configuration.
NOTE: You should change the password to ensure that no one else can
re-configure your system. Make sure you remember the new password you set.
If you forget the new password, you will not be able to perform any
other configuration tasks unless you send the device back to 3Com.
802.1X
23 To change 802.1X settings for a specific port, select that port’s tab and make the
changes by clicking the box and selecting an option from the drop list. The default
setting for Port Authorize Mode is Disable 802.1X.
802.1X is a standard for port-based network access control. Typical 802.1X
implementations in an Ethernet switch usually include the authenticator as well as
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
RADIUS clients. The authenticator controls port access for the network client
devices connected to the switch.
When the option is set to Disable 802.1X, all packets are processed as a normal
Ethernet switch; no 802.1X control applies.
With Standard 802.1X selected, control is enabled. Once the device is authorized,
the port it connects to is in the authorized state and all packets entering the port
are allowed to pass through.
When the Secure 802.1X option is selected, control is enabled. In addition, the
IntelliJack will check its ATU to determine if packets entering the port should be
forwarded. If the device is authorized, the IntelliJack will put the MAC address of
the device in the ATU and allow its packets to pass through. The NJ220 will block
all other packets that don’t have the correct MAC address specified in the ATU.
You can select the MAC address filter option if a client device does not support
802.1X and wishes to connect to the network through the IntelliJack (e.g., a
network printer). In this case, you can manually add the device’s MAC address
associated to the port in the ATU, and packets from the network to this port will
be blocked unless their MAC addresses are listed in the ATU.
802.1X with IP Phone is a special case of 802.1X secure mode. In this mode, when
a 3Com IP phone is connected to the IntelliJack, the phone’s MAC address will be
locked into the ATU automatically. Therefore, packets sent from the phone can
pass through by default without further authentication. If 802.1X control is not
required, an IP phone can connect to a port with 802.1X disabled and voice traffic
will pass through without authentication.
24 When 802.1X security is applied, authentication is required and reauthentication
is required at specific intervals. The IntelliJack disables reauthentication by default.
When reauthentication is enabled, the default period is 3600 seconds. You could
select an interval ranging from 10 to 65535 seconds. If you prefer that a
supplicant device authenticates itself on a frequent basis, you would choose a
small reauthentication interval. Likewise, you would increase the interval or disable
the function if you were not concerned about regular authentication of the
devices on your network.
25 To use 802.1X, you must select a RADIUS server to act as authenticator to devices
connected to the NJ220. To select a Primary or Secondary RADIUS server, click the
box and the Configure button. This will open a separate window.
In this box you can Enable or Disable the server, enter the server’s IP address and
the Shared Secret.
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Changing Device Configuration
51
26 To set advanced 802.1X security settings, click the Advanced Settings button in
the Security Configuration window.
Primary and secondary accounting servers are similar to the settings for RADIUS
servers. The supplicant settings let you configure the IntelliJack as a supplicant to
an 802.1X-enabled upstream switch. To enable this option, select the box next to
Supplicant. When you do, the other fields on the screen will become active. You
can enter a Supplicant User Name and Password as well as an EAP Type setting.
MD5 is the only EAP type that the IntelliJack currently supports.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
SNMP Configuration
27 Click the SNMP Configuration tab to change the SNMP settings of the NJ220.
28 You can either Enable or Disable the “Set” operation of the IntelliJack.
29 Configure the “Get” and “Set” Community Strings for SNMP management
operations.
30 Enable or Disable SNMP Trap with the Set SNMP Trap setting. Once enabled, you
have the ability to configure the remaining trap settings.
SNMP provides the ability to send traps (notifications) to a trap destination, such
as an SNMP server, when one or more conditions have been met. Traps are
network packets that contain data relating to a component of the system sending
the trap. When the condition for the trap has been met, the SNMP agent forms an
SNMP packet and sends it to the administration application.
• A Cold Start Trap signals the administration application when the IntelliJack
does a Cold Start.
• A Link Down Trap signals when the SNMP agent on the IntelliJack has gone to
“down” state and is not reachable.
• The Link Up Trap signals when then SNMP agent has gone to the “up” state
and is now reachable.
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Changing Device Configuration
53
• An Auth Fail Trap indicates a wrong Community name in the SNMP
transmission.
• Vendor Specific Traps indicate 802.1X User Login, 802.1X User Logout, and
802.1X Login Failure when the IntelliJack is configured for 802.1X.
31 You can Set Trap Destination by entering the IP address of your SNMP
management console. This eliminates the need to build a Trap Destination Table
via a Management Information Database (MIB) browser.
32 Set the Trap Community String in the final field of this window.
Advanced Configuration
33 Select the Advanced Configuration tab for this window:
Event Alert Levels
34 At the top of this window is a setting to specify the Event Alert Level. The NJ220
can alert you when specific events occur. While this lets you monitor and respond
to network events more quickly, it also creates an additional workload. As a result,
the default setting is “disable all event notification” with additional levels of alerts
depending on how many events you want to monitor.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
You can change the Alert Level if you want to be notified of specific events
happening with the IntelliJack. Each level above 0 provides different types of event
alerts as described below:
Alert Level
Notifying Event
Level 0: Disable all alert messages
Level 1: Allow critical alerts
None
Device Power Failure/Reboot
Abnormal Reboot
IP Address Change
Device Power Failure/Reboot
Abnormal Reboot
Level 2: Allow standard alerts
Level 3: Allow all alerts
IP Address Change
Unauthorized Access
Device Power Failure/Reboot
Abnormal Reboot
IP Address Change
Unauthorized Access
Normal Reboot
NBX phone plugged in
NBX phone removed
Port Based Controls
35 For the next three settings, first select the port you want to configure.
36 You can turn on Flow Control for a specific port. Setting Flow Control to Off (the
default setting) allows full passage of traffic regardless of how quickly it is
processed by the IntelliJack.
You may want to turn Flow Control On if you discover that large amounts of
traffic are being sent to the IntelliJack and it is dropping Ethernet packets. The
Flow Control sends a message to the upstream switch the IntelliJack is connected
to, telling it to slow down the rate at which it forwards traffic. This will slow down
the network.
37 The IntelliJack has the ability to configure AutoMDI[X]. Manual MDI configuration
(the default value) assumes that the patch cords between the IntelliJack’s PAN
port and the device it’s plugged into are straight-through cables (not cross-over
cables).
If you use cross-over cables to connect devices to your network, you would need
to set this option to Manual MDIX Configuration so that network traffic can pass
between the device and the PAN port of the IntelliJack.
38 You may want change the Data Rate Control options. The default settings allow
all types of traffic to pass through the IntelliJack at full bandwidth.
You can change the frame limitations to slow down or block particular types of
traffic. For example, you may want to allow unicast traffic to pass at full
bandwidth but restrict broadcast traffic because you are concerned about a type
of virus that triggers broadcast storms. With the Data Rate Control, you can
configure the IntelliJack to only allow unicast traffic to pass.
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Changing Device Configuration
55
With Data Rate Control settings, you can reduce the network traffic speed on the
IntelliJack to as little as 128 Kbps. This can be useful if the machine is in a public
area where you only want to provide a minimum speed connection.
Even though there are only eight rate limiting choices in the pull-down menu, you
can actually increase the number of options you have by setting the Priority Levels
on the Priority and VLAN Configuration tab. The following chart shows the various
options you can choose on a per port basis:
Priority Option
Multiplier
0
2
4
6
1
2
4
8
Rate limiting option
128 Kbps
256 Kbps
512 Kbps
1 Mb
128 Kbps
256 Kbps
512 Kbps
1 Mb
256 Kbps
512 Kbps
1 Mb
512 Kbps
1 Mb
1 Mb
2 Mb
2 Mb
4 Mb
2 Mb
4 Mb
8 Mb
2 Mb
2 Mb
4 Mb
8 Mb
16 Mb
4 Mb
4 Mb
8 Mb
16 Mb
32 Mb
8 Mb
8 Mb
16 Mb
32 Mb
64 Mb
No limit
Up to 100 Mb
Up to 100 Mb
Up to 100 Mb
Up to 100 Mb
39 You can change the Maximum Frame Size setting if your network uses
non-standard frame sizes.
The standard maximum size of an Ethernet frame is 1518 bytes. If a VLAN tag is
added, the maximum size increases to 1522 bytes. As a result, this is the default
setting. If your network uses larger frames, you can select the 1535 byte option.
Restoring Default Values
40 At the bottom of this window is an option to restore some of the configuration
settings to their default values. If you check this box, the following settings will be
restored:
Global Setting
Max Frame Size
Default Value
1518 or 1522 if tagged
Count good frames
8, 4, 2, 1 weighted
Egress frame unmodified
Ingress frame unmodified
Auto detection
Enable
Counter Mode
Priority Scheduling Mode
VLAN Tag for LAN Port (egress)
VLAN Tag for LAN Port (ingress)
Power Forward
Local Configuration
SNMP SET
Enable
SNMP Traps
Disabled
Event Alert
Level 2
ATU Table
Blank
VTU Table
Blank
All RADIUS settings
Blank
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
Global Setting
Default Value
Disabled
802.1X Supplicant Status
802.1X Supplicant User Name and
Password
Blank
Port Setting
State
Default Value
Forwarding
Auto negotiation
Off
Link
Flow Control
MDI[X]
Force MDI
3%
Multicast Limit
Priority Lookup
Port Priority
VLAN ID
Tag & IPV4
0 or 1
1
802.1Q VLAN Mode
Data Rate Limit
Maximum Data Rate
Disable VLANs
All frames
No limit
The values that remain unchanged when you click Restore Base Configuration are:
• Group Name
• Location Name
• Password
• IP Address
• DHCP Settings
• SNMP Get, Set, and Trap Community Strings
• SNMP Trap Destination IP Address
• Subnet Mask
• Gateway
• Device Log (stored in EEPROM)
• Management Port VID
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Changing Device Configuration
57
41 When you are finished entering the configuration changes to your NJ220
IntelliJack, click the OK button and a Configuration Progress dialog box will
appear. If you don’t want to apply the changes you made, click Exit to discard
those changes and exit the window.
42 If you click Configuration Summary, you will see a summary of all the changes you
have made. Enter your password and click Start. As the IntelliJacks are configured,
their status will be updated in the Status column.
43 If you want to schedule the configuration changes to take effect at a later time or
date, click the Schedule button. The schedule function lets you schedule when you
want a configuration operation to occur. For example, you could turn ports on
and off at pre-designated times. In a public area, for instance, you may want to
provide network access between the hours of 7:00 a.m. and 10:00 p.m. You can
use the schedule function to automatically turn off the ports at 10:00 p.m. You
can even use this feature to automatically repeat the operation on a regular basis.
NOTE: If a NJ220 IntelliJack that was once discovered by the Central
Configuration Manager is no longer connected to your network or if you just
want to remove a device from the current database, you can select Delete
Device from the Devices menu.
From the file menu, you can use the features Backup and Restore. The Backup
operation lets you save a snapshot of the configuration of one or more IntelliJacks.
You would most likely use the Backup operation if you wanted to save the
configurations of a number of IntelliJacks (e.g., all the IntelliJacks in a particular
subnet).
When you use the Backup operation, you will be asked for a Secret Key. This is
different than the IntelliJack passwords you have already defined. It is a password
that protects the backup configuration.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
The Restore operation lets you recover configurations you saved with Backup.
When you initiate a Restore, you will be asked for the Secret Key you established
with the Backup operation.
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Finding Computers Connected to NJ220 Devices
59
Finding Computers
Connected to NJ220
Devices
Occasionally you may need to find out which IntelliJack a networked device, such
as a PC, is connected to. This is one of the many situations where the Location
Information field of the NJ220 can be very useful.
If you know the IP address or MAC address of the computer or networked device,
you can use the Central Configuration Manager to find the right IntelliJack.
1 Select Find Location from the Tools menu. You will see a window like this:
2 Enter the IP address or the MAC address of the network device you wish to find.
3 Click the Find button.
When the search is complete, the Search Results field will display the IP address of
the NJ220 that the network device is connected to. It will also show the Location
Name assigned to the IntelliJack and which PAN port the network device is using.
4 Click OK to close the window.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
Upgrading the NJ220
Firmware
You can upgrade the firmware on your NJ220s over the network from the Central
Configuration Manager. To do so, follow these steps:
1 Select one or more IntelliJacks you want to upgrade. You can select groups of
IntelliJacks using one of the grouping options available to you in the drop-down
list at the top left corner of the main window.
2 Select Upgrade from the devices menu. A window like this will appear:
3 Select Yes to continue the upgrade operation. A window like this will appear:
4 Select a valid firmware image by typing the path to the file or by using the Browse
button.
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Upgrading the NJ220 Firmware
61
5 Select the time to perform the upgrade. You can either send the update file
immediately or select a specific time and date to send the file. You may, for
example, want to perform an upgrade during off hours such as a weekend.
6 Click Next and a window like this will appear:
7 Review the list of IntelliJacks you want to upgrade. If you want to modify this list,
click Cancel and restart the firmware upgrade procedure.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
8 Type your password in the Password field, then click Finish. The Upgrade Progress
dialog box will appear.
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Upgrading the NJ220 Firmware
63
Viewing Log Files The Central Configuration Manager creates a log file with details of the firmware
upgrades, configuration operations, and alert messages from the IntelliJack. This
file is in the Central Configurator\Log subdirectory under the directory where you
installed the IntelliJack configuration software. You can the log by selecting Log
History from the View menu. A window like this will appear:
To view the details of a particular log, select it and click Detail. If an upgrade or
configuration operation fails for some reason, a message will appear in the log
file. Consult the troubleshooting guide on page 65 for more information.
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CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
Viewing and Canceling You can select a time and date to send an upgraded firmware image to the
Scheduled Firmware IntelliJacks in your network. To view and make changes to the firmware upgrades
Upgrades you have scheduled, follow these steps:
1 Select Manage Schedule from the Tools menu. A window like this will appear:
2 To view the details of a scheduled upgrade, select it from the list and click Show
Devices. To cancel a scheduled upgrade, select it from the list and click Delete.
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A
Troubleshooting the NJ220
If you encounter problems with the IntelliJack:
I Verify the IntelliJack is receiving power by viewing the Power LED (it should be on). If
the Power LED is not on, make sure that:
I
If using power over Ethernet, the other end of the network cable is plugged
into a switch on the network that has Power Over Ethernet integrated into it,
or one that feeds into an external midspan power supply that supports Power
Over Ethernet.
I
The local power supply is plugged into the IntelliJack and into a working
electrical outlet, if your network does not support Power Over Ethernet.
I Verify the IntelliJack is connected to the network properly by viewing the Link LED (it
should be on). If the Link LED is not on, make sure the network cable:
I
Is terminated properly. Refer to the connector manufacturer’s instructions for
terminating the cable. Be sure to test the connector and verify it is working.
I
I
Has a valid connection to the network.
Adheres to proper length and cabling specifications for your network.
I The IntelliJack is configured for manual MDI. Be sure to use a straight-through cable.
If you want to use a cross-connect cable, you must change settings in the
Configuration Manager software.
Troubleshooting Matrix
Event/Message
Description
Solution
Power LED is not on
IntelliJack is not receiving
power
I
Ensure power supply is properly
connected.
I
For power over Ethernet, make sure
that the cable is connected to both
the LAN port on the back of the
IntelliJack and to the workgroup
switch.
I
Make sure the upstream switch is
configured and active
Link LED is not on
IntelliJack has no connection
to the network
I
I
I
I
Make sure network cable is properly
terminated.
Make sure the IntelliJack is connected
to the network.
Make sure the cable is plugged into
the workgroup switch.
Make sure the upstream switch is
configured and active
65
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Troubleshooting the NJ220
Event/Message
Description
Solution
Green LEDs on Ports 1-4
are not on
Network device has no
connection to IntelliJack
I
Make sure the cable is properly
connected to the network device.
I
Make sure the cable is firmly
connected to one of the four
IntelliJack ports labeled 1-4.
I
Make sure the cable is a good
straight-through cable.
Amber LED on Port 1 is
not lit
Power is not being
forwarded to network
device
I
I
I
Make sure the cable is properly
connected to Port 1 of the IntelliJack.
Make sure the cable is properly
connected to the powered device.
Make sure the IntelliJack is configured
to match the cable - either straight
through or crossover.
I
I
Make sure the powered device is IEEE
802.3af compatible.
Make sure the power requirement for
the powered device does not exceed 7
watts. The IntelliJack can only forward
up to 7 watts.
Power LED is blinking
continuously
Unit has detected a problem.
Traffic can pass through, but
management will not work.
I
Contact 3Com Technical Support.
Authentication Failure
Timeout
Wrong password has been
entered
I
I
Confirm correct password and re-
type.
Device did not respond
within a specified period of
time
Refresh the screen after a few
seconds. If the problem persists, try to
rediscover the device.
Attributes Error
General Error
Unexpected configuration
parameters
I
I
Confirm that you have specified valid
parameter values and retry the
configuration operation.
NOTE: This error should not appear to
the user under normal conditions.
Something other than
authentication failure,
timeout or attributes error
has occurred
I
I
Retry the operation you were
performing.
NOTE: This error should not appear to
the user under normal conditions.
66
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OBTAINING SUPPORT FOR
YOUR 3COM PRODUCTS
B
3Com offers product registration, case management, and repair services
through eSupport.3com.com. You must have a user name and password
to access these services, which are described in this appendix.
Register Your
Product to Gain
Service Benefits
To take advantage of warranty and other service benefits, you must first
register your product at:
3Com eSupport services are based on accounts that are created or that
you are authorized to access.
Solve Problems
Online
3Com offers the following support tool:
■
3Com Knowledgebase — Helps you to troubleshoot 3Com
products. This query-based interactive tool is located at:
It contains thousands of technical solutions written by 3Com support
engineers.
Purchase Extended
Warranty and
Professional
Services
To enhance response times or extend your warranty benefits, you can
purchase value-added services such as 24x7 telephone technical support,
software upgrades, onsite assistance, or advanced hardware
replacement.
Experienced engineers are available to manage your installation with
minimal disruption to your network. Expert assessment and
implementation services are offered to fill resource gaps and ensure the
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68
APPENDIX B: OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS
success of your networking projects. For more information on 3Com
Extended Warranty and Professional Services, see:
Contact your authorized 3Com reseller or 3Com for additional product
and support information. See the table of access numbers later in this
appendix.
Access Software
Downloads
You are entitled to bug fix / maintenance releases for the version of
software that you initially purchased with your 3Com product. To obtain
access to this software, you need to register your product and then use
the Serial Number as your login. Restricted Software is available at:
To obtain software releases that follow the software version that you
originally purchased, 3Com recommends that you buy an Express or
Guardian contract, a Software Upgrades contract, or an equivalent
support contract from 3Com or your reseller. Support contracts that
include software upgrades cover feature enhancements, incremental
functionality, and bug fixes, but they do not include software that is
released by 3Com as a separately ordered product. Separately orderable
software releases and licenses are listed in the 3Com Price List and are
available for purchase from your 3Com reseller.
Contact Us
3Com offers telephone, internet, and e-mail access to technical support
and repair services. To access these services for your region, use the
appropriate telephone number, URL, or e-mail address from the table in
the next section.
Telephone Technical To obtain telephone support as part of your warranty and other service
Support and Repair benefits, you must first register your product at:
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Contact Us
69
When you contact 3Com for assistance, please have the following
information ready:
■
■
■
■
Product model name, part number, and serial number
A list of system hardware and software, including revision level
Diagnostic error messages
Details about recent configuration changes, if applicable
To send a product directly to 3Com for repair, you must first obtain a
return materials authorization number (RMA). Products sent to 3Com
without authorization numbers clearly marked on the outside of the
package will be returned to the sender unopened, at the sender’s
expense. If your product is registered and under warranty, you can obtain
must apply for a user name and password.
Telephone numbers are correct at the time of publication. Find a current
directory of 3Com resources by region at:
Country
Telephone Number
Country
Telephone Number
Asia, Pacific Rim — Telephone Technical Support and Repair
Australia
Hong Kong
India
Indonesia
Japan
Malaysia
New Zealand
1800 075 316
2907 0456
000 800 440 1193
001 803 852 9825
03 3507 5984
1800 812 612
0800 450 454
Philippines
1800 144 10220 or
029003078
800 810 0504
800 616 1463
080 698 0880
00801 444 318
001 800 441 2152
PR of China
Singapore
South. Korea
Taiwan
Thailand
Pakistan Call the U.S. direct by dialing 00 800 01001, then dialing 800 763 6780
Sri Lanka Call the U.S. direct by dialing 02 430 430, then dialing 800 763 6780
Vietnam Call the U.S. direct by dialing 1 201 0288, then dialing 800 763 6780
You can also obtain non-urgent support in this region at this email address [email protected]
Or request a return material authorization number (RMA) by FAX using this number: +61 2 9937 5048, or send an
email at this email address: [email protected]
Europe, Middle East, and Africa — Telephone Technical Support and Repair
From anywhere in these regions not listed below, call: +44 1442 435529
From the following countries, call the appropriate number:
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70
APPENDIX B: OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS
Country
Telephone Number
Country
Telephone Number
Austria
Belgium
0800 297 468
0800 71429
800 17309
0800 113153
0800 917959
0800 182 1502
06800 12813
1 800 553 117
180 945 3794
800 879489
Luxembourg
Netherlands
Norway
800 23625
0800 0227788
800 11376
00800 4411 357
800 831416
0800 995 014
900 938 919
020 795 482
0800 553 072
0800 096 3266
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
Italy
You can also obtain support in this region using this URL: http://emea.3com.com/support/email.html
You can also obtain non-urgent support in this region at these email addresses:
Technical support and general requests: [email protected]
Return material authorization: [email protected]
Contract requests: [email protected]
Latin America — Telephone Technical Support and Repair
Antigua
Argentina
Aruba
Bahamas
Barbados
Belize
Bermuda
Bonaire
Brazil
Cayman
Chile
Colombia
Costa Rica
Curacao
Ecuador
Dominican Republic
1 800 988 2112
0 810 444 3COM
1 800 998 2112
1 800 998 2112
1 800 998 2112
52 5 201 0010
1 800 998 2112
1 800 998 2112
0800 13 3COM
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Nicaragua
Panama
Paraguay
Peru
Puerto Rico
Salvador
Trinidad and Tobago
Uruguay
Venezuela
Virgin Islands
AT&T +800 998 2112
57 1 657 0888
AT&T +800 998 2112
1 800 998 2112
571 657 0888
01 800 849CARE
AT&T +800 998 2112
AT&T +800 998 2112
54 11 4894 1888
AT&T +800 998 2112
1 800 998 2112
AT&T +800 998 2112
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
57 1 657 0888
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
You can also obtain support in this region in the following ways:
■
■
■
Spanish speakers, enter the URL: http://lat.3com.com/lat/support/form.html
Portuguese speakers, enter the URL: http://lat.3com.com/br/support/form.html
English speakers in Latin America, send e-mail to: [email protected]
US and Canada — Telephone Technical Support and Repair
All locations:
All 3Com products:
1 800 876 3266
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C
Product Specifications
Hardware
Power consumption
<5 watts without power forwarding
Maximum 13 watts with power forwarding (depending on the
device drawing power)
Network Interface
10 Mbps Ethernet
10BASE-T
Ethernet IEEE 802.3 industry standard for a 10 Mbps baseband
CSMA/CD local area network
100 Mbps Ethernet
100BASE-TX
Ethernet IEEE 802.3u industry standard for a 100 Mbps baseband
CSMA/CD local area network
Performance
Auto-negotiation
Communication speed (10 Mbps or 100 Mbps) and duplex mode
(full or half) can be determined through auto-negotiation with
the attached devices. The IntelliJack attempts to negotiate the
fastest connection possible (100 Mbps full-duplex).
The communication speed and duplex mode can also be
controlled using the configuration management software.
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Product Specifications
MIB Support
MIB II (RFC 1213)
Bridge MIB (RFC 1493)
Ether-like MIB (RFC 1643)
MIB for MAUs (RFC 2668)
MIB for bridge with extensions (RFC 2674)
802.1x MIBs
RADIUS Authentication Client MIB (RFC 2618)
RADIUS Accounting Client MIB (RFC 2620)
3Com Proprietary MIBs
Standard Traps
Backup & Restore MIB
RADIUS Client MIB
Link Up
Link Down
Cold Start
Authentication Failure
Proprietary Traps
SecureLogon
SecureLogoff
SecureLoginFailure
Environment
Operating temperature
Storage temperature
Operating humidity
Storage humidity
Operating Altitude
Storage Altitude
32° to 104° F (0° to 40° C)
-22° to 194° F (-30°- to 90° C)
10-90% noncondensing
10-90% noncondensing
8,000 ft. max
20,000 ft. max
Standards
Conformance
IEEE802.3 10BASE-T, 100BASE-TX and auto-negotiation
Power Over Ethernet (Capacitive Power Discovery Process and IEEE 802.3af)
Power forwarding (IEEE802.3af; 7 watts, 48 volts)
Features
Power Over Ethernet
Compatible with IEEE 802.3af and Capacitive Power Discovery
Process
Local power supply
Voice Over IP (VoIP)
Required for networks that do not support Power Over Ethernet
Compatible with VoIP standard.
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Power forwarding
Power forwarding Port number 1 can be used with any standard
networking device as well as to power a device such as a VoIP
telephone on a network that uses IEEE 802.3af-compatible Power
Over Ethernet.
RMON Counters
InUnicasts
Total valid frames received with a unicast Destination Address.
A valid frame has a good FCS and its size is greater than 64
bytes and less than 1518 for non tagged frames, 1522 for
tagged frames, or 1535 if MaxFrameSize =1 (set in global
control register).
InBroadcasts
Total valid frames received with destination address equal to
FF:FF:FF:FF:FF:FF.
InPause
Total pause frames received.
InMulticasts
Total valid frames received with multicast destination address that
are not counted in InBroadcasts or InPause.
InFCSErr
AlignErr
Total frames received with a valid length and an invalid FCS.
Total frames received with valid length that have an invalid FCS
and a non-integral number of octets.
InGoodOctets
InBadOctets
Total data octets received in frames with a valid FCS. Undersize
and oversize frames are included. The count includes the FCS
but not the preamble.
Total data octets received in frames with an invalid FCS;
fragments and jabbers are included, The count includes the FCS
but not the preamble.
Undersize
Total frames received with a length of less than 64 octets but a
valid FCS.
Fragments
In64Octets
In127Octets
In255Octets
In511Octets
In1023Octets
InMaxOctets
Jabber
Total frames received with a length of less than 64 octets and
an invalid FCS
Total frames received with a length of exactly 64 octets,
including those with errors.
Total frames received with a length of between 65 and 127
octets inclusive, including those with errors.
Total frames received with a length of between 128 and 255
octets inclusive, including those with errors.
Total frames received with a length of between 256 and 511
octets inclusive, including those with errors.
Total frames received with a length of between 512 and 1023
octets inclusive, including those with errors.
Total frames received with a length of between 1024 and
MaxSize octets inclusive, including those with errors.
Total frames received with a length of more than MaxSize octets
but with an invalid FCS.
Oversize
Total frames received with a length of more than MaxSize octets
but with a valid FCS.
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Product Specifications
InDiscards
Total valid frames received that are discarded due to lack of
buffer space. This includes frames discarded at ingress as well as
those dropped due to priority and congestion considerations at
the output queues. Frames dropped at egress due to excessive
collisions are not included but are counted in the Excessive
counter.
InFiltered
If 802.1Q is disabled on the port, these are the total valid frames
received that are not forwarded to a destination port. These are
frames for which the destination port vector is 0 or are not
forwarded due to the state of the portState bits. valid frames
discarded due to a lack of buffer space are not included.
If 802.1Q is enabled on the port, then these are the total valid
frames received (tagged or untagged) that were discarded due
to an unknown VID (i.e., the frame's VID was not in the VTU)
OutUnicasts
Total valid frames transmitted with a unicast destination
address
OutBroadcasts
Total valid frames transmitted with destination address equal to
FF:FF:FF:FF:FF:FF.
OutPause
Total pause frames transmitted.
OutMulticasts
Total valid frames transmitted with multicast destination
address that are not counted in OutBroadcasts or OutPause.
OutFCSErr
Total frames transmitted with a valid length and an invalid FCS.
OutGoodOctets
Total data octets transmitted. The count includes the FCS but
not the preamble.
Out64Octets
Total frames transmitted with a length of exactly 64 octets,
including those with errors.
Out127Octets
Out255Octets
Out511Octets
Out1023Octets
OutMaxOctets
Total frames transmitted with a length of between 65 and 127
octets inclusive, including those with errors.
Total frames transmitted with a length of between 128 and
255 octets inclusive, including those with errors.
Total frames transmitted with a length of between 256 and
511 octets inclusive, including those with errors.
Total frames transmitted with a length of between 512 and
1023 octets inclusive, including those with errors.
Total frames transmitted with a length of between 1024 and
1522 octets inclusive, including those with errors.
Collisions
Late
Total number of collisions during frame transmission.
Total number of times collision is detected later than 512 bit-
times into the transmission of a frame.
Excessive
Total number of frames not transmitted because the frame
experienced 16 transmission attempts and was discarded. The
discard will only occur if DiscardExcessive is set to a 1 (in global
control register).
Multiple
Total number of successfully transmitted frames that
experienced more than on collision.
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Single
Total number of successfully transmitted frames that
experienced exactly one collision.
Deferred
Total number of successfully transmitted frames that are
delayed because the medium is busy during the first attempt.
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Product Specifications
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REGULATORY INFORMATION
FCC COMPLIANCE
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may
not cause harmful interference, and (2) this device must accept any interference received, including interference that may
cause undesired operation.
FCC CLASS A VERIFICATION
STATEMENT
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case, the user will be required to correct the interference at the
user’s own expense.
Changes or modifications not expressly approved by 3Com could void the user’s authority to operate this equipment.
INDUSTRY CANADA (IC)
COMPLIANCE STATEMENT
This Class A digital apparatus complies with Canadian ICES-003.
AVIS DE CONFORMITÉ À LA
RÉGLEMENTATION
Cet appareil numérique de la classe A est conform à la norme NMB-003 du Canada.
D’INDUSTRIE CANADA
EUROPEAN UNION
DECLARATION OF
CONFORMITY
This product is in compliance with the essential requirements and other relevant provisions of Directives 73/23/EEC and
89/336/EEC.
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JAPAN VCCI COMPLIANCE
Translation:
This is a Class A product based upon the standard of the Voluntary Control Council for Interference by Information Technology
Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may occur, in which case, the user
may be required to take corrective actions.
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