3COM 3CNJ205 User Manual

User Guide

NJ205 IntelliJack

3CNJ205 4-port 10/100 Mbps Managed Ethernet Switch

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

Published July 2003 User guide version 1.0

3Com Corporation n 5500 Great America Pkwy n Santa Clara, California n 95052-8145 n U.S.A.

Copyright © 2003 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.

U.S. patents: 5,994,998; 6,140,911; 6,329,906; 6,496,105; 6,535,9836, 483,203; 6,449,348; 6,212,195

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Contents

About the NJ205 IntelliJack 1

Package Contents 3 NJ205 Description 5

Installing the IntelliJack 7

Setting up the Power Supply 7 Mounting the IntelliJack 8 Connecting Devices to the IntelliJack 10 Checking the LEDs 11

Installing the Configuration Managers 13

System Requirements 14 Installing the Local and Central Configuration Managers 14

Using the Local Configuration Manager 21

Initializing the NJ205 IntelliJack 21 Setting Advanced Options 25 Discovering NJ205 Devices on Your Network 27

Using the Central Configuration Manager 27

Viewing Device Properties 33 Changing Device Configuration 39 Finding Computers Connected to NJ205 Devices 49 Upgrading the NJ205 Firmware 51

Contents

Specifications 57 Default Settings 61 Optional Components 63

Power Supplies and IP Phone Power Module 63 Mounting Plates and Spacers 64

Power Options 65

Using an Integrated Switch with Power Over Ethernet 66 Using Ethernet Multi-port Midspan Power Supply 67 Using a Single-port Ethernet Power Supply 69 Using the 3Com Local Power Supply 70

Installation Planning 73 Troubleshooting 75

Troubleshooting Matrix 76 One-Year Free Installation Support 79 Online Technical Services 79

Technical Support 79

Support from Your Network Supplier 81 Support from 3Com 82 Returning Products for Repair 82 3Com Corporation Limited Warranty 83

Limited Warranty and Regulatory Compliance Information

The 3Com NJ205 is part of the IntelliJack family of products that provides connectivity at the edge of the network infrastructure.

The NJ205 IntelliJack is a 4-port, un-managed Fast Ethernet switch that fits into most standard data port openings.

The NJ205 IntelliJack quadruples port connections where a single port (and cable) already exists in the wall. Expanding port connections with the 3Com IntelliJack is a less expensive and less disruptive alternative to running additional cabling. Also, the 3Com IntelliJack is installed in the wall, making it more secure and out of the way than deploying a remote desktop switch.

The NJ205 IntelliJack allows up to four networking devices, such as computers, printers, Voice over IP (VoIP) telephones, and scanners, to be connected to the network via its own Ethernet port. A pass-through port is provided that allows an additional device to be connected to a separate network segment through the same IntelliJack.

All ports feature 10/100 Mbps auto-negotiation, which configures the NJ205 IntelliJack for 10 Mbps or 100 Mbps connections automatically.

The NJ205 needs no software to operate and no configuration. However, to modify the default configuration and utilize the advanced feature we have provided a configuration manager software suite on compact disk.

A b o u t t h e N J 2 0 5 IntelliJack

About the NJ205 IntelliJack

You can manage the NJ205 IntelliJack 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

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

Packa ge Cont ents

Pack a ge Con tents

The NJ205 IntelliJack is available in single- and 20-packs. Before installation, familiarize yourself with the following items, which are included with the NJ205:

1 NJ205 IntelliJack.

2 Four pairs of M3. 5mm screws (two per IntelliJack) for

mounting the IntelliJack to the wall, floor box or office cubicle.

3 M ounting plate (face plate).

About the NJ205 IntelliJack

Additionally, the following items are shipped with the single pack:

■ Compact disc containing

■ User Guide and additional informational documents.

■ Configuration Manager software.

All screws are phillips pa n head type scr ews. The ty pe of thr eads vary to match the different mounting locations compatible with the IntelliJack.

■ Thread forming screws for mounting into plastic:

■ M3 x 30mm (2x)

■ M3 x 40mm (2x)

■ Machine screws for mounting into metal:

■ M3.5 x 50mm (2x)

■ M3.5 x 740mm (2x)

For more information on optional components, see Appendix C, “Optional Components”.

NJ205 Description

The following diagram shows the front, rear and bottom views of the IntelliJack:

1 RJ-45 switched

PAN (personal area network) ports

2 Port LEDs and

corresponding port numbers

3 RJ-45 LED Indicates the status of the LAN connection

Four 10/100 Mbps auto-negotiation ports, which the NJ205 configures for 10 Mbps or 100 Mbps connections automatically (green LEDs).

Indicate network status of each of the four RJ-45 PAN ports.

(white cable, green LED). For more information, see “Checking the LEDs” on page 11.

Abo ut the NJ 205 Int elliJack

4 Power LE D

5 Pass-through

port

6 Power-

forwarding LED

Indicates NJ205 p ower status (gr een). For more information, see “Checking the LEDs” on page 11.

Provides an independent connection to your

LAN that passes through the NJ205 IntelliJack.

The data or voice traffic is separate from and unaffected by the NJ205 switch.

Lights when the IntelliJack is connected to

and forwar ding power to an IEEE 802.3af

compliant device. For more information, see “Chec king the LEDs” on page 11.

7 Local power

supply cable strain relief

8 Power Socket The NJ205 can be p owered from a local

Local power supply cable strain relief.

power supply (available for purchase from 3Com). This is required if your network does not support Power over Ethernet (PoE).

Main Unit Connects the NJ2 05 switched RJ-45 ports to

LAN cable (white)

the Ethernet LAN. Ma ke sure the port on the

network switch to whic h the NJ205 is connected is configured as a standard MDI-X port.

Pass-through

LAN cable

(Black)

Connects your pass-through port directly to the Ethernet LAN. No LED

Installing the NJ205 IntelliJack consists of the following steps:

1 Set up the power supply. 2 Mount the NJ205 to the wall outlet box. 3 Connect devices to the NJ205. 4 Check the NJ205 LEDs.

Installing the IntelliJack

Setting up the Power Supply

Power to the IntelliJack is provided thr ough one of the following methods:

■ Over the network via an integrated switch that supports

Power Over Ethernet.

■ Over the network via an Ethernet multi-port endspan power

supply.

■ Over the network via a single-port Ethernet power supply.

■ Locally via a 3Com local power supply.

NOTE: Power Over Ethernet, also known as in-line power , is a method to pr ovide power to equ ipment over an Ethernet cable, allowing a device to receive both data and power from the same network cable. The NJ205 is ideally powered by a switch that is IEEE 802.3afcompliant. The NJ205 can also be powered by some switches that are not 802.3af-comp liant. Consul t the 3Com web site for more information.

Installing the IntelliJack

Before you begin installation, dete rmine which type of power supply the IntelliJack will use. For more information on power options and configuration, see Appendix D, “Power Options”.

Mounting the IntelliJack

The IntelliJack mounts in any standard British Standard Institute (BSI): BS 4664:1970 (1986) single cubicle opening or wall outlet.

M ounting t he Inte lliJa ck

Before connecting the IntelliJack to the network, verify that the existing network cabling meets the ANSI/TIA/EIA-568 standard and that the port in the wiring closet is connected to an active Ethernet MDI-X port.

1 Thread both IntelliJack LAN cables through the opening in

the mounting plate.

2 Connect the wiring as illustrated on page 8.

The IntelliJack has two Ethernet cables each terminated with a male RJ-45 connector.

 The white cable connects the LAN to the four personal

area network (PAN) ports located on the bottom of the IntelliJack.

 The black cable connects the LAN to the single pass-

through port located on the front of the IntelliJack.

3 C hoose one pair of the provided screws that best fits your

outlet box.

4 Tighten the screws while holding the IntelliJack in place.

NO TE: The IntelliJack is designed to be mounted using the provided mounting plate or many aftermarket faceplates. However, some after-market faceplates stand out from the wall and do not provide a secure mounting surf ace for the IntelliJack. In such cases it is recommended to place the 3C om spacer between the IntelliJack and the after-market face plate. For more information on the different mounting plates and spacers, see Appendix B.

Insta llin g th e Int elli Jack

Conne cting Devices to the IntelliJack

Once the power source and the data source have been verified in good working order and the IntelliJack has been installed and

mounted, connect your networking devices (such as computers, printers, IP phones, cameras, etc. ) to the IntelliJack.

The IntelliJack has two ways to connect devices:

1 RJ-45 Personal A rea Network (PAN) Ports — any of the four

switched po rts on the bottom of the IntelliJack . A ll ports f eature

10/100 Mbps auto-negotiation, which configures the NJ205

IntelliJack for 10 Mbps or 100 M bps connections automatically.

2 Pass-through port—a single pass-through port is provided

that allows an additional device to be connected to a separate network segment through the same IntelliJack. The data or voice traffic that travels through the pass-through port, passes through the IntelliJack without being switched.

Che cking the LEDs

Checking the LED s

You can verify the IntelliJack installation by checking the LEDs.

LED Descript ion

 On—the IntelliJack is connected to the network

and a link has been established.

 Off—there is no connection to the network.

(LAN)

 On—the IntelliJack is receiving power (local or

via the network). W hen you first connect power to the IntelliJack, there is a delay of

(Power)

(Power-

forwarding)

CA UTIO N: Make sure the wiring closet port connected to the IntelliJack white cable is configured as a standard M DI-X port.

approximately 5 seconds. The power LED light blinks once or tw ice before remaining solid on.

 Off—the IntelliJack is not receiving power.

 On—the IntelliJack is connected to and is

forw arding power to an IEEE 802. 3af-compliant device.

 Off—the IntelliJack is not connected to or is not

forw arding power to an IEEE 802. 3af-compliant device.

Installing the IntelliJack

Installing the

Once you have installed the NJ205 hardware, you need to configure it for use on your particular network. To configure the NJ205, install the Local and Central Configuration Managers.

NOTE: You will use the Local Configuration Manager for initial configuration of the NJ205 on your network. It is usually easiest if you load this software on a laptop and use it to configur e NJ205 devices as you install them.

The NJ205 Central Configuration Manager is used for advanced configuration and management of one or more NJ205 devices on your network. This software should be installed on the machine you plan to use to manage your NJ205 devices from a remote location—perhaps the same console you use for SNMP management.

Configuration Managers

Installing the Configuration Managers

System Requirements

The machine you install the software on should meet the following requirements:

■ Pentium processor

■ Minimum of 15MB disk space

■ Windows 2000 or Windows NT 4.0 with Service Pack 6

installed (Windows 95 and Windows 98 are not recommended operating systems for use with management platforms. In most cases, the Configuration Manager software will work with Windows 95, 98, or XP. However, please check 3Com’s web site for additional information regarding XP support)

Installing the Local and Central Configuration Managers

To install the Configuration Manager software:

1 Insert the Configuration Manager software CD into your

Windows 2000 or Windows NT computer.

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:

Installing the Local and Central Configuration Managers

3 Click Next to continue. 4 Carefully read the license agreement. If you agree, click

“Yes, I accept” and Next to continue.

5 Enter your user and organization names and click Next.

Installing the Configuration Managers

6 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.

Installing the Local and Central Configuration Managers

7 Select a typical or custom setup and click Next. The Typical

installation will install both the Lo ca l Con figuration Manager and the Central Configuration Manager on your system. The Custom installation option lets you install just one of the programs if you wish.

Installing the Configuration Managers

8 Review the settings you selected and click the Install button.

Installing the Local and Central Configuration Managers

9 When the installation has completed, click the Finish button

to close the installation utility. The installation utility creates 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 Configuration Managers

Using the Local

Initializing the NJ205 IntelliJack

Once you have installed the NJ205 hardware on your network and the Local Configuration Manager software on your computer, you need to perform an initial configuration of the IntelliJack.

1 Connect your computer to the NJ205 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 NJ205.

2 Click on the desktop shortcut icon labeled NJ205 Local

Config Mgr to start the program. When i t launches, you will see a window like this:

Configuration Manager

Using the Local Configuration Manager

3 The MAC address and default IP address of the currently

connected NJ205 will appear in the first field. If you connect to another NJ205, 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.

Initializing the NJ205 IntelliJack

5 Enter Location Information for the particular NJ205 you are

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 256 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 NJ205 should use to obtain an IP

address. The NJ205 can either get an IP address from an existing DHCP server on your network or you can directly specify the 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 NJ205 is configured to automatically obtain an IP address from a DHCP server. If no DHCP server exists, or if the NJ205 cannot obtain an IP address, it will default to the IP address 192.168.1.252.

Using the Local Configuration Manager

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 NJ205 and will become effective immediately.

Those are the only steps required to initialize your NJ205 IntelliJack.

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