3com NJ200 User Manual

User Guide

3Com Network Jack

Model NJ200

http://www.3com.com/ http://www.3com.com/productreg

Published September 2002 User guide version 1.0

3Com Corporation■5400 Bayfront Plaza■Santa Clara, California■95052-8145■U.S.A.

Copyright © 2002 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this user guide.

Portions of this documentation are reproduced in whole or in part with permission from (as appropriate).

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com, Dynamic

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

All other company and product names may be trademarks of the respective companies with which they are associated.

Access

, EtherCD, EtherLink and EtherLink II are registered trademarks and the 3Com logo is a trademark of 3Com Corporation.

ONTENTS

NSTALLING THE

About the Network Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Obtaining Optional Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Installing the Network Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Checking the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

NSTALLING

System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Installing the Local and Central Configuration Managers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Initializing the NJ200 Network Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Setting Advanced Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Discovering NJ200 Devices on Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Viewing Device Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Changing Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Finding Computers Connected to NJ200 Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Upgrading the NJ200 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

SING

THE

OCAL

ENTRAL

NJ200 N

ONFIGURATION

ETWORK

ONFIGURATION

ACK

ANAGERS

ANAGER

ROUBLESHOOTING

Troubleshooting Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

ECHNICAL

Online Technical Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Support from Your Network Supplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 8

Support from 3Com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Returning Products for Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

RODUCT

EGULATORY

UPPORT

PECIFICATIONS

THE

NJ200

NFORMATION

•

NSTALLING

•

THE

NJ200 N

ETWORK

ACK

The 3Com NJ200 Network Jack 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 Network Jack. All ports feature 10/100 Mbps auto-negotiation.

Power to the Network Jack 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 NJ200 is ideally powered by a switch that is IEEE 802.3af-compatible or has a Capacitive Power Discover Process (24V or 48V). The NJ200 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 NJ200 Network Jack using the included Central 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), multicast limit)

QoS/Priority

Port-based VLAN

VLAN tag add/remove

Firmware upgrade

HAPTER

1: I

NSTALLING

About the Network Jack

NJ200 N

THE

ETWORK

ACK

The following diagram shows the front view of the Network Jack:

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.

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.

LEDs

Indicates network connection status.

Indicates power status.

Power socket Can be used to power the Network Jack with a local

power supply (available for purchase from 3Com); required if your network does not support Power Over Ethernet.

•

Before You Begin 3

The following diagram shows the back view of the Network Jack:

Before You Begin

Ethernet uplink port (RJ-45 female)

Slot for adapter plate Can be fitted with an adapter plate, which can be installed with

Adapter plate with installed pass-through port connector

Dip switches

Connects the Network Jack to the network.

Make sure the port on the network switch to which the Network Jack is connected is configured as a standard MDI-X port.

up to two pass-through ports.

Connects the installed pass-through port to the network.

Select the type of Power Over Ethernet (Capacitive Power Discovery Process 24V or 48V or IEEE 802.3af) the Network Jack uses.

Changing the dip switch settings is required only if your network supports Power Over Ethernet, or if you are using a multi-port Ethernet power supply. See “Setting the Power Over Ethernet Dip Switches” on page 7 for instructions.

Before you begin installation, register your product at: www.3com.com/productreg.

The Network Jack is available in single- and 20-packs. Before you begin the installation, make sure you have the following items, which are included with the Network Jack:

1.5 inch, 6x32 screws (2 per Network Jack) for mounting the Network Jack to the wall or office cubicle.

•

HAPTER

1: I

NSTALLING

Obtaining Optional Components

NJ200 N

THE

ETWORK

ACK

Male to male RJ-45 coupler cable (1 per Network Jack) for connecting the Ethernet cable from the network to the Network Jack (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:

Panduit (RJ-45 and RJ-11)

Avaya (RJ-45 and RJ-11)

NOTE: The connectors for the adapter plates must be purchased from the manufacturer. For a list of supported connectors, go to www.3com.com/.

Adapter plate screws (2) for mounting the adapter plate to the Network Jack.

The Network Jack works with the following optional components, all of which are available from 3Com. Order online at www.3com.com or by calling 1-877-949-3266.

Component

Adapter plates

Purpose 3C Number(s)

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.

Extension ring For ensuring that the Network Jack is properly

mounted to a cubicle; required if the cubicle opening:

Has a depth of fewer than 1.5 inches.

Does not support the NEMA-WD6 standard.

Does not have pre-drilled screw holes for standard mounting.

Single-port Ethernet power supply

Multi-port Ethernet power supply

For providing Power Over Ethernet to locally power a single Network Jack.

For providing Power Over Ethernet to power up to 24 Network Jacks.

Local power supply For locally powering a single Network Jack;

required if your network does not support Power Over Ethernet.

VoIP telephone power cable

For powering a VoIP telephone on a network that uses Capacitive Power Discovery Process-compatible Power Over Ethernet.

3CNJAP-PA-20

3CNJAP-AV-20

3CNJEXTRING

3CNJPSE

3CNJPSE24

3C10220

3C10222

3CNJPSL

Check the 3Com web site

Installing the Network Jack 5

•

Installing the Network Jack

Installing the Network Jack consists of the following steps:

Set up the power supply (page 5).

If necessary, set the Power Over Ethernet dip switches (page 7; optional, required only if your network supports Power Over Ethernet or if you are using a single-port or multi-port power supply).

Install the adapter plate and pass-through ports (page 8).

Plan the installation (page 9).

Set up the network cabling at your site (page 10).

Connect the Network Jack to the network (page 10).

Mount the Network Jack to the wall or office cubicle (page 11).

Connect the local power supply (page 11; optional) not required if your network supports Power Over Ethernet or if you are using a single-port or multi-port power supply).

Connect network devices to the Network Jack (page 13).

The following diagram displays an overview of the recommended installation, where the Network Jack 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

Supply

Power to the Network Jack can be supplied one of the following ways:

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.

HAPTER

1: I

NSTALLING

NJ200 N

THE

ETWORK

ACK

Before you begin the installation, determine which type of power supply the Network Jack will use.

NOTE: For a list of power supplies that support the Network Jack, go to www.3com.com/.

CAUTION: Use only a power supply that is provided or approved by 3Com for use with this Network Jack. Failure to do so may result in damage to the Network Jack, 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 Capacitive Power Discovery Process (24V or 48V) or 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.

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 Network Jacks. 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 Network Jack, 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.

Installing the Network Jack

Using the 3Com Local Power Supply

To use the local power supply, make sure you have an electrical outlet near the site where the Network Jack will be installed. First plug the power cord into the Network Jack, then plug it into the electrical socket. See page 12 for more details.

Setting the Power Over

Ethernet Dip Switches

If your network switch or power supply supports Power Over Ethernet, you must set the dip switches on the Network Jack to the appropriate setting: Capacitive Power Discovery/24V, Capacitive Power Discovery/48V, or IEEE 802.3af.

NOTE: If you are not using Power Over Ethernet to power the Network Jack, skip this section. Go to “Installing the Adapter Plate and Pass-Through Ports” on page 8 to continue.

CAUTION: Before setting the dip switches, make sure that power to the Network Jack is off.

Do not change dip switches 1 and 2 from their factory default settings (OFF). Changing these settings may result in performance degradation.

Set the appropriate dip switches (labeled 3 and 4) for the type of Power Over Ethernet supported. The default setting is IEEE 802.3af-compatible Power Over Ethernet.

HAPTER

1: I

NSTALLING THE

NJ200 N

ETWORK JACK

Installing the Adapter

Plate and Pass-Through

Ports

Power Over Ethernet Supported

Capacitive Power Discovery/24V Ethernet Power Source

Capacitive Power Discovery/48V Ethernet Power Source 4 (ON)

IEEE 802.3af-compatible Power Over Ethernet 4 (OFF)

Dip Switch

Numbers

4 (ON)

3 (ON)

3 (OFF)

Setting

ON ddddddd 1

Install the blank adapter plate, or if you want to use pass-through ports for connecting an analog or PBX digital telephone or for setting up a connection to a separate network segment, purchase supported connectors and install them on the appropriate Network Jack 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 Network Jack adapter plates, go to www.3com.com.

4 3 2

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.

Pull the network cable(s) from the wiring closet to the location of the Network Jack.

Thread the network cable(s) through the empty slot on the Network Jack.

Installing the Network Jack 9

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 Network Jack using the two adapter plate screws

provided.

Planning the Installation When installed, the back of the Network Jack 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 Network Jack:

• Make sure the wall or cubicle opening where the Network Jack is being

installed complies with the NEMA-WD6 standard, as described below.

• Make sure the distance between the back of the Network Jack 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 Network Jack 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 Network Jack 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 Network Jack 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:

10 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK

n ANSI/TIA/EIA-568

Commercial Building Telecommunications Cabling Standard

n ANSI/TIA/EIA-569

Commercial Building Standard for Telecommunications Pathways and Spaces

Setting up the Network

Cabling at Your Site

Connecting the Network

Jack to the Network

The network cabling at your site (from the wiring closet to the wall or cubicle 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 Network Jack 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.

The method for connecting the Network Jack to the network is determined by how your network cable is terminated (as described in the previous section, “Setting up 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 Network Jack to the network cable (recommended installation.)

• If the end of the cable is terminated with a male connector, connect the

network cable directly into the Ethernet uplink port.

Installing the Network Jack 11

Mounting the Network

Jack

After connecting the Network Jack to the network, use the two provided screws to mount the Network Jack 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 Network Jack using the extension ring, as shown below.

Connecting the Local

Power Supply (Optional)

CAUTION: Make sure the vents along the edges of the Network Jack faceplate are clear of any obstructions. If necessary, install the extension ring on recessed openings to allow airflow to vents.

If your network does not support Power Over Ethernet, or if you are not using a single-port or multi-port Ethernet power supply, you must purchase a local power

12 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK

supply from 3Com (see “Obtaining Optional Components” on page 4). To connect the local power supply to the Network Jack, please follow these steps:

1 Route the power cable through the strain relief of the Network Jack (as shown in

the diagram below).

2 Securely mount the Network Jack on a wall.

3 Plug the power cable into the Network Jack. 4 Secure the local power supply and cable to the wall. 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 Network Jack, or may result in a hazardous situation.

Checking the LEDs 13

Connecting Devices to

the Network Jack

After the Network Jack is installed and mounted, connect your networking devices (such as computers, printers, etc.) to any of the four switched ports on the front of the Network Jack.

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 Network Jack installation by checking the LEDs.

LED Description

n On—The Network Jack is connected to the network and a link

has been established.

n Off—There is no connection to the network.

(LAN)

n On—The Network Jack is receiving power (local or via the

network). When you first connect power to the Network Jack, there will be a delay of approximately 5 seconds. The power LED light will blink once or twice before remaining solid on.

(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 Network Jack is forwarding power to a connected device.

n Off—The Network Jack is not receiving power.

14 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK

+ 40 hidden pages