3Com NJ240FX - IntelliJack Switch User manual

3Com IntelliJack Switch NJ240FX
User Guide
http://www.3com.com/
http://esupport.3com.com
Published March 2005
User Guide version 1.0

3Com Corporation ■350 Campus Drive ■Marlborough, Massachusetts ■01752 ■U.S.A.
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CONTENTS
INSTALLING THE NJ240FX
About the NJ240FX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Mounting the IntelliJack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Connecting Devices to the NJ240FX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Checking the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
INSTALLING THE CONFIGURATION MANAGERS
System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Installing the Local and Central Configuration Managers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
USING THE LOCAL CONFIGURATION MANAGER
Initializing the IntelliJack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Setting Location Information
Setting the Group Name
Setting the IP Address
Setting Advanced Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Changing the Password
Configuring for SNMP
USING THE CENTRAL CONFIGURATION MANAGER
Discovering IntelliJacks on Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Viewing Device Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
General Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Network
Identification
Port Information
Product Information
Hardware Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Switch Status
Power Status
Statistics & Log Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
General Counters
RMON Counters
Saving to a Log File
SNMP Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
SNMP Management
SNMP v3 User Profile

Advanced Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Event Alerts
802.1X Settings
System Log Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Changing Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
General Configuration Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Identification Settings
Hardware Settings
Priority & VLAN Configuration Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Port-Based Settings
Other VLAN Settings
Security Configuration Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Device Password
802.1X
SNMP Configuration Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
SNMP management
SNMP v3 User Profile
Advanced Configuration Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Event Alerts
Port-Based Configuration (Flow Control, AutoMDI(X), Data Rate Control)
Restoring to Base Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
System Log Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Finding Computers Connected to IntelliJacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Upgrading the NJ240FX Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Viewing Log Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Viewing and Canceling Scheduled Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
TROUBLESHOOTING THE NJ240FX
Troubleshooting Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
TECHNICAL SUPPORT
Where To Go For Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Contact Us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
PRODUCT SPECIFICATIONS
WARRANTY AND REGULATORY INFORMATION

1INSTALLING THE NJ240FX
INTELLIJACK
The 3Com NJ240FX IntelliJack is a 4-port, managed Ethernet switch that fits into
any standard electrical wall outlet or data port opening. It brings switching
capabilities for up to four networking devices, such as computer, printers, and
Voice Over IP (VoIP) telephones to a single fiber uplink to the network. All ports
feature 10/100 Mbps auto-negotiation. Power to the IntelliJack is provided
through a power supply internal to the unit.

2CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK
You can manage the NJ240FX 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), frame rate limit)
•IPv4, IPv6 support
•802.1P QoS/Priority
•802.1Q compatible VLAN
•SNMPv3 support
•VLAN tag add/remove
•Firmware upgrade
•Rate limiting
•MAC filtering
•802.1x port security
•User-configured VLAN IDs for management packets
•Port-based “calendar” function

About the NJ240FX 3
About the NJ240FX The following diagram shows the front and rear views of the IntelliJack:
1 RJ-45 switched PAN
(personal area
network) ports
Four 10/100 Mbps auto-negotiation ports, which the
IntelliJack configures for 10 Mbps or 100 Mbps connections
automatically.
2 Port LEDs and
corresponding port
numbers
Indicate network link status of each of the four RJ-45 PAN
ports.
3 LAN LED Indicates the link status of the LAN connection (fiber uplink).
For more information, see “Checking the LEDs.”
4 Power LED Indicates IntelliJack power status (green). For more
information, see “Checking the LEDs.”
5 Pass-through port
connector
The pass-through port allows for connection to a separate
network. The data or voice traffic on this port does not flow
through the switch.
6 Power-forwarding
LED
Lights when an IEEE 802.3af powered device is plugged into
Port #1 of the NJ240FX and power is being forwarded to that
device. For more information, see “Checking the LEDs.”
7 AC power socket The IntelliJack is powered by an internal power supply.
8 Fiber optic
transceiver
Connects the NJ240FX switched RJ-45ports to the fiber optics
network.
9 Pass-through port
cable
The pass-through port allows for connection to a separate
network. The data or voice traffic on this port does not flow
through the switch.

4CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK
Before You Begin Before you begin installation, register your product at: http://eSupport.3com.com.
The IntelliJack is available in three connector types: -LC (3CRNJ240FXLCTAA-75),
-SC (3CRNJ240FXSCTAA-75), and -ST (3CRNJ240FXSTTAA-75). Before you begin
the installation, familiarize yourself with the following items, which are included
with the IntelliJack:
•NJ240FX IntelliJack.
•Mounting plate
•Plastic cable housing tray
•Power cord
•Three screws
•Compact disc containing
nUser Guide and additional informational documents.
nConfiguration Manager software.
Planning the Installation Because the depth of some wall and cubicle openings differ, observe the following
requirements and recommendations before installing the IntelliJack:
•Ensure there is enough volume in the wall opening to accommodate fiber
cables.
•Ensure there is clearance around the unit for proper cooling.
•The NJ240FX has been designed for installation into wall or cubicle openings
that conform to NEMA standards.
•Make sure the distance between the back of the IntelliJack and the inside of
the wall or cubicle opening is at least 25mm to maintain an acceptable bend
radius on the cable.
•To ensure proper horizontal cabling functionality, adhere to the following
standards during installation:
nANSI/TIA/EIA-568
Commercial Building Telecommunications Cabling Standard
nANSI/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.
NOTE: It is recommended that a professional cable installer perform these
procedures. Be sure to adhere to local safety and regulatory codes during the
cable installation.

Mounting the IntelliJack 5
Setting up the Power
Supply
Power to the IntelliJack Switch NJ240FX is provided via AC power. It has an
internal power supply that can accept 100~240V AC power. A power connector
is supplied that can be securely plugged into the unit.
Mounting the
IntelliJack
Before connecting the IntelliJack to the network, verify that the existing network
cabling is connected to an active fiber port.
Instructions for unpacking and mounting the NJ240FX.
1Remove the unit from its protective anti-static bag.
CAUTION: The supplied AC power cable is the only approved power cord that
can be used with the unit and is required to maintain proper strain relief of the
assembly and AC power cord.

6CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK
2Remove any shipping tape from the unit and separate the metal plate from the
main unit. Separate the plastic housing cable tray from the main unit by sliding it
downward towards the four downstream ports and then away from the main
unit.
3Route the two fiber cables through the rectangular opening directly above the UP
arrow indicator from the backside of the metal mounting plate (side opposite the
metal mounting post). Pull through enough cable to allow yourself room to
terminate the connections.
4Route both fiber optic cables through the rectangular opening in the plastic
housing cable tray.
5Attach both fiber optic cables to the fiber transceiver module located on the
backside of the main unit.
6Route the two fiber cables around the cable management feature approximately
one turn until you end up in the area with no guide tabs.
7Plug the supplied AC power cable into the mating plug on the backside of the
main housing.