3Com WL522 Router Manual PDF (Setup & Configuration Guide)

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ONFIGURING

THE

R

OUTER

Support/Feedback

You can use the Support/Feedback screen to obtain support and help,

and also provide feedback to 3Com.

Support

Figure 108

Support Screen

This screen shows support information.

Feedback

To provide feedback to 3Com, please click

Provide Feedback

, and this will

connect you to the 3Com Web site.

Figure 109

Feedback Screen

This screen shows feedback information.

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6

T

ROUBLESHOOTING

Basic Connection

Checks

The Router has been designed to aid you when detecting and solving

possible problems with your network. These problems are rarely serious;

the cause is usually a disconnected or damaged cable, or incorrect

configuration. If this section does not solve your problem, contact your

supplier for information on what to do next.

Perform these actions first:

■

Ensure all network equipment is powered on.

■

Power each piece of network equipment off, wait about five seconds

and then power each one on.

CAUTION:

Do not power the Router off and then immediately on. Wait

about five seconds between power cycles.

Check the following symptoms and solutions:

■

Check that the Router is connected to your computers and to the

cable/DSL modem, and that all the equipment is powered on. Check

that the LAN Status and power LEDs on the Router are illuminated,

and that any corresponding LEDs on the NIC are also illuminated.

■

Ensure that the computers have completed their start-up procedure

and are ready for use. Some network interfaces may not be correctly

initialized until the start-up procedure has completed.

■

If the link status LED does not illuminate for a port that is connected,

check that you do not have a faulty cable. Try a different cable.

■

Port Status LED not lit for a port that has a TP cable connected. After

connection, it may take several seconds for the Port Status LEDs to

illuminate. The Port Status LED should turn Blue, for each port that is

connected. If the Port Status LED is not lit after several seconds, ensure

that the connected device is powered on, that the TP cable is not

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damaged and that it is correctly inserted at both ends. You may find

that a TP cable works when connected to the Router, but does not

work if disconnected from the Router and connected to another

device. This may be because the other device does not have the

automatic MDI/MDIX feature.

Browsing to the

Router

Configuration

Screens

If you have connected your Router and computers together but cannot

browse to the Router configuration screens, check the following:

■

Confirm that the physical connection between your computer and the

Router is OK, and that the LAN Status LEDs on the Router and

network adapter are illuminated. Some NICs do not have status LEDs,

in which case a diagnostic program may be available that can give you

this information.

■

Ensure that you have configured your computer as described in

Chapter 3

. Restart your computer while it is connected to the Router

to ensure that your computer receives an IP address.

■

When entering the address of the Router into your web browser,

ensure that you use the full URL including the http:// prefix (e.g.

http://192.168.1.1

).

■

Ensure that you do not have a Web proxy enabled on your computer.

Go to the

Control Panel

and click on

Internet Options

. Select the

Connections

tab and click on the

LAN Settings

button at the bottom.

Make sure that the

Proxy Server

option is unchecked.

■

If you cannot browse to the Router, use the

winipcfg

utility in

Windows 98/ME to verify that your computer has received the correct

address information from the Router. From the

Start

menu, choose

Run

and then enter

winipcfg

. Check that the computer has an IP

address of the form 192.168.1.xxx (where xxx is in the range 2-254),

the subnet mask is 255.255.255.0, and the default Router is

192.168.1.1 (the address of the Router). If these are not correct, use

the

Release

and

Renew

functions to obtain a new IP address from the

Router. Under Windows 2000, Windows XP, and Windows Vista use

the

ipconfig

command-line utility to perform the same functions.

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Connecting to the Internet

127

Connecting to the

Internet

If you can browse to the Router configuration screens but cannot access

Web sites on the Internet, check the following:

■

Confirm that the physical connection between the Router and the

cable/DSL modem is OK, and that the Cable/DSL LED on the Router is

illuminated.

■

Ensure that you have entered the correct information into the Router

configuration screens as required by your Internet Service Provider. Use

the Internet Settings screen to verify this.

■

Check that the PPPoE, or L2TP, or PPTP user name and password are

correct.

■

Ensure that your computers are not configured to use a Web proxy.

On Windows computers, this can be found under

Control Panel

>

Internet Options

>

Connections

.

Forgotten Password

and Reset to

Factory Defaults

If you can browse to the Router configuration screen but cannot log on

because you do not know or have forgotten the password, follow the

steps below to reset the Router to its factory default configuration.

CAUTION:

All your configuration changes will be lost, and you will need

to run the configuration wizard again before you can re-establish your

Router connection to the Internet. Also, other computer users will lose

their network connections whilst this process is taking place, so choose a

time when this would be convenient.

1

Power off the Router.

2

Disconnect all your computers and the telephone line from the Router.

3

Re-apply power to the Router, and wait for it to finish booting up.

4

Press and hold the

Reset

button on the rear panel (see

Figure 4

on

page 17) for 5 seconds.

5

The Router will restart, and when the start-up sequence has completed,

browse to:

http://192.168.1.1

and run the configuration wizard. You may need to restart your computer

before you attempt this.

6

When the configuration wizard has completed, you may reconnect your

network as it was before.

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Wireless

Networking

■

Ensure that you have an 802.11b or 802.11g or 802.11n wireless

adapter for each wireless computer, and that it is correctly installed

and configured. Verify that each wireless computer has either

Windows 98 or higher or MAC OS 8.5 or higher.

■

Verify that your wireless computers are configured to work in

Infrastructure mode and not Ad Hoc mode. The Router contains an

Access Point that is designed to operate in Infrastructure mode. Ad

Hoc mode is not supported by the Router.

■

If you have a wired and a wireless NIC in the same computer, ensure

that the wired NIC is disabled.

■

Check the status of the WLAN LED, it should be lit if wireless is

enabled and will flash when there is wireless activity. If not lit go to

Wireless Settings

on

page 55

and enable wireless networking.

■

Ensure that the TCP/IP settings for all devices are correct.

■

Ensure that the Wireless Clients are using the same SSID or Service

Area Name as the Router. The SSID is case-sensitive.

■

Ensure that the encryption method and level that you use on your

clients are the same as those configured on the Router. The Router

cannot simultaneously support WPA and WEP encryption.

■

Ensure that you have the wireless computer enabled in the list of

allowed MAC addresses if you are using MAC Address Filtering on the

Router.

■

If you are having difficulty connecting or are operating at a low speed

try changing the antenna positions on the rear of the Router.

For more effective coverage you can try reorientating your antennae.

Place one antenna vertically and one horizontally to improve coverage.

Additionally consider moving the wireless computer closer to the

Router to confirm that the building structure or fittings are not

adversely affecting the connectivity. If this resolves the problem

consider relocating the wireless computer or the Router, or trying a

different channel on the Router.

■

Sources of interference: The 2.4Ghz ISM band is used for 802.11b and

802.11g and 802.11n. This is generally a licence free band for low

power applications, and you may have other devices at your location

that operate in this frequency band. You should take care to ensure

that there are no devices, like microwave ovens for example, close to

the Router or wireless computers as this could affect receiver

sensitivity and reduce the performance of your network. If you are

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