3Com 3CRWDR300A-73 Router Manual PDF (Setup & Configuration Guide)

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134

C

HAPTER

5: C

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 115

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 116

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

telephone line, and that all the equipment is powered on. Check that

the LAN Status and SYNC 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.

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HAPTER

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ROUBLESHOOTING

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.

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

telephone line is OK, and that the DSL LED on the Router is

illuminated.

■

ADSL Sync LED (3 on fig3) – LED illuminated indicates the physical

connection to the ADSL line is good.

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Connecting to the Internet

137

■

If the ADSL Sync LED is off or flashes but does not go to a steady on

state, please go through the following steps before contacting 3Com

support.

1

Your ISP may have upgraded their DSLAM equipment:

Verify your 3Com Router has the latest software/firmware available

installed. Upgrades are found at http://www.3Com.com/downloads, if

that does not help, contact your ISP to see if there has been any updates

or upgrades on their services, either via them or via the main Telco

provider in your area, Obtain the list of these updates with the list of new

hardware now being used and contact 3Com support after that to see if

your Router can be updated to support such new upgrades.

2

Your ADSL filter may be faulty:

Replace your ADSL filter and disconnect all other equipment on the line in

case it is another ADSL filter that has developed a fault.

3

Your Internet Service may be out of order:

Contact your Internet provider to see if they are having any problems on

their side. They can also check your line for you.

4

There is too much noise on your phone line:

If you can hear noise on your line over the phone, this may also affect

your ADSL connection. Contact your phone line supplier so that they can

fix this for you.

5

You may not have an ADSL filter on every phone socket used on the same

line as the ADSL Router:

If you have connected new equipment on the phone line that is not

connected via an ADSL filter, this may cause your Router to stop working

properly. It's advisable not to exceed a maximum of 4 devices on a phone

line.

6

Your phone line cable may have been pulled out of the phone socket of

the Router:

Although it sounds obvious, this has regularly been found to be a cause

of the Routers loss of ADSL Sync. Try using a new phone cable in case it

had been damaged.

7

If practical, try using someone else's line connection to see if your Router

works there. If you can use your Router at someone else's line

connection, contact your internet provider, ask them why your Router no

longer works at your location but works somewhere else.

8

If this still does not help you to connect, contact 3Com support for

further help and advice. Please mention what you have tested from the

above list to the support engineer.

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ROUBLESHOOTING

■

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.

■

Verify the connection type is the type required by your Service

Provider

■

ADSL Data (4 on fig3) – LED on indicates the Router has logged on

to the ADSL service using the user name and password configured

in the PPPoA or PPPoE configuration screen, see

page 41/page 42

■

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 5

on

page 18

) 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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