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Chapter 6.

Troubleshooting

Mobile Broadband 11n Wireless Router MBR1210 User Manual

Troubleshooting the ISP Connection

Check these possible sources of trouble if you are having difficulty connecting to or browsing

the Internet.

Connecting to the Internet

If unable to connect to Internet, check the following:

1.

The Internet account is active.

If your ISP has provided you with a

SIM card and you haven’t inserted

it into the SIM card slot on the

back of the router yet, do so now.

2.

Wireless broadband coverage is

available where the unit is located.

3.

Access the router main menu to

verify that the broadband settings

are correct. Check with your ISP if

you are unsure.

4.

Check the location of the router.

a.

Move the router closer to a

window for better access to the Internet signal.

•

A blue Signal LED indicates excellent coverage.

•

A green Signal LED indicates good coverage.

•

An amber Signal LED indicates marginal coverage.

•

An unlighted Signal LED indicates no coverage.

b.

Maintain recommended minimum distances between NETGEAR equipment and

household appliances to reduce interference (see

Regulatory Compliance

Information

on page

97).

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5.

Using an external antenna for improved signal strength:

b

. Clear the

Use Internal Antenna

check box on the Mobile

Broadband Settings screen

a

. Install an external antenna.

c

. Click

Connect

to connect to the

Internet.

(The external antenna is an

optional accessory that you

can purchase.)

and then click

Apply

.

Troubleshooting Internet Browsing

If your router can obtain an IP address but your computer is unable to load any Web pages

from the Internet:

•

The traffic meter is enabled, and the limit might have been reached.

By configuring the traffic meter not to block, you can resume Internet access. If you have

an usage limit, your ISP might charge you for the overage.

•

Your computer might not recognize any DNS server addresses.

A DNS server is a host on the Internet that translates Internet names (such as www

addresses) to numeric IP

addresses. Typically your ISP provides the addresses of one or

two DNS servers for your use. If you entered a DNS address during the router’s

configuration, reboot your computer and verify the DNS address as described in the

article you can access from

ITCP/IP Networking Basics

in Appendix

A. Alternatively, you

can configure your computer manually with DNS addresses, as explained in your

operating system documentation

.

•

Your computer might not have the router configured as its TCP/IP router.

If your computer obtains its information from the router by DHCP, reboot the computer,

and verify the router address as described in the online document you can access from

ITCP/IP Networking Basics

in Appendix

A.

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Troubleshooting a TCP/IP Network Using the Ping Utility

Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request

packet to the designated device. The device then responds with an echo reply. You can easily

troubleshoot a TCP/IP network by using the ping utility in your computer.

Testing the LAN Path to Your Router

You can ping the router from your PC to verify that the LAN path to your router is set up

correctly.

To ping the router from a PC running Windows 95 or later:

1.

From the Windows toolbar, click the Start button, and select Run.

2.

In the field provided, type

ping

followed by the IP address of the router, as in this example:

ping 192.168.0.1

3.

Click

OK

.

You should see a message like this one:

Pinging <IP address> with 32 bytes of data

If the path is working, you see this message:

Reply from < IP address >: bytes=32 time=NN ms TTL=xxx

If the path is not working, you see this message:

Request timed out

If the path is not working correctly, you could have one of the following problems:

•

Wrong physical connections

-

Make sure that the LAN port LED is on. If the LED is off, follow the instructions in

Connecting to the Internet

on page

87.

-

Check that the corresponding Link LEDs are on for your network interface card

and for the hub ports (if any) that are connected to your workstation and router.

•

Wrong network configuration

-

Verify that the Ethernet card driver software and TCP/IP software are both

installed and configured on your PC or workstation.

-

Verify that the IP address for your router and your workstation are correct and that

the addresses are on the same subnet.

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Testing the Path from Your Computer to a Remote Device

After verifying that the LAN path works correctly, test the path from your PC to a remote

device.

1.

From the Windows toolbar, click the Start button, and select Run.

2.

In the Windows Run window, type:

ping -n 10

IP address

where

IP address

is the IP address of a remote device such as your ISP’s DNS server.

If the path is functioning correctly, replies as in the previous section are displayed. If you do

not receive replies:

•

Check that your PC has the IP address of your router listed as the default router. If the IP

configuration of your PC is assigned by DHCP, this information is not visible in your PC’s

Network Control Panel. Verify that the IP address of the router is listed as the default

router as described in the online document you can access from

Preparing Your Network

in Appendix

A.

•

Make sure that the network address of your PC (the portion of the IP address specified by

the netmask) is different from the network address of the remote device.

•

Check that your cable or DSL modem is connected and functioning.

•

If your ISP assigned a host name to your PC, enter that host name as the account name

in the Basic Settings screen.

•

Your ISP could be rejecting the Ethernet MAC addresses of all but one of your PCs. Many

broadband ISPs restrict access by allowing only traffic from the MAC address of your

broadband modem, but some ISPs additionally restrict access to the MAC address of a

single PC connected to that modem. If this is the case, you must configure your router to

clone or spoof the MAC address from the authorized PC. See the

Mobile Broadband 11n

Wireless Router MBR1210 Installation Guide

.

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Problems with Date and Time

The email screen displays the current date and time of day. The Mobile Broadband 11n

Wireless Router uses the Network Time Protocol (NTP) to obtain the current time from one of

several network time servers on the Internet. Each entry in the log is stamped with the date

and time of day. Problems with the date and time function can include the following:

•

Date shown is January 1, 2000.

Cause: The router has not yet successfully reached a network time server. Check that

your Internet access settings are configured correctly. If you have just completed

configuring the router, wait at least 5 minutes, and check the date and time again.

•

Time is off by one hour.

Cause: The router does not automatically sense daylight savings time. On the E-mail

screen, select or clear the

Adjust for Daylight Savings Time

check box.

Restoring the Default Configuration and Password

This section explains how to restore the factory default configuration settings, changing the

router’s admin password to

password

and the IP address to

192.168.0.1

. You can erase the

current configuration and restore factory defaults in two ways:

•

Use the Erase feature (see

Erasing the Configuration

on page

54).

•

Press the Restore Factory Settings button on the bottom of the router for 6 seconds. Use

this method for cases when the administration password or IP address is not known.

The factory default settings are shown in

Factory Default Settings

in Appendix

A.