User Guide 3Com Network Jack Model NJ200 http://www.3com.com/ http://www.3com.com/productreg Published September 2002 User guide version 1.
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.
CONTENTS INSTALLING THE NJ200 NETWORK JACK About the Network Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Obtaining Optional Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 INSTALLING THE NJ200 NETWORK JACK 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.
2 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK About the Network Jack The following diagram shows the front view of the Network Jack: 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.
Before You Begin 3 The following diagram shows the back view of the Network Jack: 1 Ethernet uplink port (RJ-45 female) Connects the Network Jack to the network. 2 Slot for adapter plate Can be fitted with an adapter plate, which can be installed with up to two pass-through ports. 3 Adapter plate with installed pass-through port connector Connects the installed pass-through port to the network.
4 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK • 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.
Installing the Network Jack Installing the Network Jack 5 Installing the Network Jack consists of the following steps: 1 Set up the power supply (page 5). 2 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). 3 Install the adapter plate and pass-through ports (page 8). 4 Plan the installation (page 9). 5 Set up the network cabling at your site (page 10).
6 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK 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.
Installing the Network Jack 7 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.
8 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK Power Over Ethernet Supported Capacitive Power Discovery/24V Ethernet Power Source Dip Switch Numbers 4 (ON) 3 (ON) Capacitive Power Discovery/48V Ethernet Power Source 4 (ON) 3 (OFF) IEEE 802.
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).
10 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK n n Setting up the Network Cabling at Your Site ANSI/TIA/EIA-568 Commercial Building Telecommunications Cabling Standard ANSI/TIA/EIA-569 Commercial Building Standard for Telecommunications Pathways and Spaces 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.
Installing the Network Jack Mounting the Network Jack 11 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.
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.
Checking the LEDs Connecting Devices to the Network Jack 13 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.
14 CHAPTER 1: INSTALLING THE NJ200 NETWORK JACK
2 INSTALLING THE CONFIGURATION MANAGERS Once you have installed the NJ200 hardware, you need to configure it for use on your particular network. To configure the NJ200, install the Local and Central Configuration managers. NOTE: You will use the Local Configuration Manager for initial configuration of the NJ200 on your network. It’s usually easiest if you load this software on a laptop and use it to configure Network Jacks as you install them.
16 CHAPTER 2: INSTALLING THE 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 Local and Central Configuration Managers 17 6 The program files will be installed in the directory C:\Program Files\3Com\Network Jack. If you want to change the location of the installation, click Change. Otherwise click Next to accept the default location and continue. 7 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.
18 CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS 8 Review the settings you selected and click the Install button. 9 When the installation has completed, click the Finish button to close the installation utility.
Installing the Local and Central Configuration Managers 19 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 Network Jack and can be found under the Programs menu.
20 CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS
3 Initializing the NJ200 Network Jack USING THE LOCAL CONFIGURATION MANAGER Once you have installed the NJ200 hardware on your network and the Local Configuration Manager software on your computer, you need to perform an initial configuration of the Network Jack. 1 The first step is to connect your computer to the NJ200 that you are installing.
22 CHAPTER 3: USING THE LOCAL CONFIGURATION MANAGER 6 Enter a Group Name for this Network Jack. This can be any name you wish. With the Central Configuration Manager, you can perform management tasks on all Network Jacks with the same group designation. 7 Select the method the NJ200 should use to obtain an IP address. The NJ200 can either get an IP address from an existing DHCP server on your network or you can directly specify the address.
Setting Advanced Options 23 1 Select the Advanced tab on the NJ200 Local Configuration Manager window. 2 To change the Network Jack’s configuration password, click on the box next to Change NJ Password. Then enter the new password in both password fields. (You must enter the password twice to ensure you entered it correctly.) The password you select can be any combination of letters and numbers between 8 and 32 characters.
24 CHAPTER 3: USING THE LOCAL CONFIGURATION MANAGER
4 USING THE CENTRAL CONFIGURATION MANAGER You should use the Local Configuration Manager to initialize each of the NJ200 Network Jacks 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.
26 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 2 Select Discovery from the Devices menu. The following window will appear: NOTE: The default subnets are the ones your machine is connected to. 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.
Viewing Device Properties 27 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.
28 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER at one time, see “Changing Device Configuration” on page 31. To get more detailed information about a device, you should check its properties: 1 Select a Network Jack from the devices list. 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.
Viewing Device Properties 29 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. 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.
30 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 9 Click on the Statistics 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 8 on page 33). You can reset all counters to zero by clicking Clear.
Changing Device Configuration 31 10 Click on the SNMP Settings tab to see the following window: 11 You can view and edit the SNMP Common Settings and Trap Settings for this particular NJ200. 12 Click Apply to save any changes you make and a configuration summary dialog box will appear. Verify the information and click OK. 13 Click Exit to close the Device Property window.
32 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 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 Network Jack from the Central Configuration Manager, the NJ200 must already be discovered and part of the device database, and you must be able to communicate with the device from your workstation.
Changing Device Configuration 33 8 By default, the Central Configuration Manager will display a count of good transmissions in the Property window. If you would rather track errors and collisions, select that option in the Counter Mode setting.
34 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 11 Click the VLAN tab to configure your Network Jack for use in a virtual LAN. 12 From this window you can associate any of the four ports with any other ports on this Network Jack to form a VLAN group. You can specify the tag schemes for the VLAN you create. NOTE: VLAN stands for Virtual Local Area Network. VLANS are used to create a subgroup of systems within a LAN in order to isolate traffic between network devices.
Changing Device Configuration 35 13 Select the Security tab to set the security options of the NJ200 Network Jack. 14 You can change the device password (the default password is “password”), and adjust the SNMP Set permissions and Community Strings.
36 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 15 Click the SNMP Traps tab to change the trap settings of the NJ200. 16 From this window you can enable or disable the device’s Cold Start, Link Down, Link Up, and Authorization Fail traps to be sent to your SNMP console.
Changing Device Configuration 37 17 Select the Advanced tab for this window: 18 You can change the Max Frame Size and Power Forward settings by selecting an option from the drop-down list. 19 From this window, you can see another set of tabs, one for each port on the Network Jack. Click on the port whose settings you want to change, check the box next to the setting to be changed, and select a value from the drop-down list.
38 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Port Setting Default Value State Forwarding Link Auto negotiation Flow Control Off MDI[X] Force MDI Multicast Limit 3% Priority Lookup Tag & IPV4 Port Priority 1 VLAN ID 1 Port based VLAN All ports on same VLAN The values that remain unchanged when you click Restore Factory Default Settings are: • Group Name • Location ID • Password • IP Address • DHCP Settings • SNMP Community Strings • SNMP Trap Settings 21 When you are finished e
Finding Computers Connected to NJ200 Devices 39 22 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 Network Jacks are configured, their status will be updated in the Status column.
40 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Upgrading the NJ200 Firmware You can upgrade the firmware on your NJ200s over the network from the Central Configuration Manager. To do so, follow these steps: 1 Select one or more Network Jacks you want to upgrade. You can select groups of Network Jacks 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.
Upgrading the NJ200 Firmware 41 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 Network Jacks you want to upgrade. If you want to modify this list, click Cancel and restart the firmware upgrade procedure.
42 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.
Upgrading the NJ200 Firmware Viewing Log Files 43 The Central Configuration Manager creates a log file with details of the firmware upgrade operation. This file is in the Central Configurator\Log subdirectory under the directory where you installed the Network Jack configuration software. You can also view a history of firmware upgrades 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.
44 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Viewing and Canceling Scheduled Firmware Upgrades You can select a time and date to send an upgraded firmware image to the Network Jacks in your network. To view and make changes to the firmware upgrades you have scheduled, follow these steps: 1 Select Scheduled Upgrade from the View 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.
A Troubleshooting the NJ200 If you encounter problems with the Network Jack: Verify the Network Jack is receiving power by viewing the Power LED (it should be on). If the Power LED is not on, make sure the: ■ ■ Power Over Ethernet dip switches are set correctly (for either Capacitive Power Discovery Process 24V or 48V or IEEE 802.3af), if your network supports Power Over Ethernet. See “Setting the Power Over Ethernet Dip Switches” on page 7 for instructions.
Troubleshooting the NJ200 Event/Message Description Solution Green LEDs on Ports 1-4 are not on Network device has no connection to Network Jack Make sure the cable is properly connected to the network device. Make sure the cable is firmly connected to one of the four Network Jack ports labeled 14. Make sure the cable is a good straightthrough cable. Amber LED on Port 1 is not lit Power is not being Make sure the cable is properly connected to the network device.
B Technical Support 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site. Online Technical Services Register for support at support.3com.com/registration/frontpg.
Technical Support NOTE: With Web browser software, such as Netscape Navigator and Internet Explorer, you do not need a user name and password. 3Com Connection Assistant The 3Com Connection Assistant is interactive software that gives you an easy to use diagnostic and repair tool. Using this tool makes troubleshooting easier and helps you quickly resolve problems. Go to: Start/Programs/3Com NIC Utilities/3Com Connection Assistant to find the utility.
Support from 3Com Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier, 3Com offers technical telephone support services. To find out more about your support options, go to the Web site associated with your region of the world shown below. Region URL for Regional Web Site Asia and the Pacific Rim ap.3com.com/contacts/support-contacts.html Africa, Europe, and the Middle East emea.3com.com/support/supportnumbers.
Technical Support 50
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.
Product Specifications Environment Operating temperature 32° to 104° F (0° to 40° C) Storage temperature -22° to 194° F (-30°- to 90° C) Operating humidity 10-90% noncondensing Storage humidity 10-90% noncondensing Operating Altitude 8,000 ft. max Storage Altitude 20,000 ft. max Standards Conformance IEEE 802.3 10BASE-T, 100BASE-TX and auto-negotiation Power Over Ethernet (Capacitive Power Discovery Process and IEEE 802.3af) Power forwarding (IEEE 802.
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.