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Page 36 / 46 Scroll up to view Page 31 - 35
NETGEAR Router Setup Manual
6-4
Troubleshooting Common Problems
August 2004
3.
Under the Maintenance heading, select Router Status
4.
Check that an IP address is shown for the WAN Port
If 0.0.0.0 is shown, your router has not obtained an IP address from your ISP.
If your router is unable to obtain an IP address from the ISP, you may need to force your cable or
DSL modem to recognize your new router by performing the following procedure:
1.
Turn off power to the cable or DSL modem.
2.
Turn off power to your router.
3.
Wait five minutes and reapply power to the cable or DSL modem.
4.
When the modem’s lights indicate that it has reacquired sync with the ISP, reapply power to
your router.
5.
Then restart your computer.
If your router is still unable to obtain an IP address from the ISP, the problem may be one of the
following:
•
Your ISP may require a login program.
Ask your ISP whether they require PPP over Ethernet (PPPoE) or some other type of login.
•
If your ISP requires a login, you may have incorrectly set the login name and password in the
router.
•
Your ISP may check for your computer's host name.
Assign the computer Host Name of your ISP account as the Account Name in the Basic
Settings menu.
•
Your ISP only allows one Ethernet MAC address to connect to Internet, and may check for
your computer’s MAC address. In this case:
Inform your ISP that you have bought a new network device, and ask them to use the router’s
MAC address.
OR
Configure your router to spoof your computer’s MAC address. This can be done in the Basic
Settings menu.
If your router can obtain an IP address, but your computer is unable to load any Web pages from
the Internet:
•
Your computer may not recognize any DNS server addresses.
Page 37 / 46
NETGEAR Router Setup Manual
Troubleshooting Common Problems
6-5
August 2004
A DNS server is a host on the Internet that translates Internet names (such as www addresses)
to numeric IP addresses. Typically your ISP will provide 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
“Install or Verify Windows
Networking Components” on page C-9
. Alternatively, you may configure your computer
manually with DNS addresses, as explained in your operating system documentation
.
•
Your computer may not have the router configured as its TCP/IP gateway.
If your computer obtains its information from the router by DHCP, reboot the computer and
verify the gateway address as described in
“Install or Verify Windows Networking
Components” on page C-9
.
Troubleshooting a TCP/IP Network Using a 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. Troubleshooting a TCP/IP
network is made very easy by using the ping utility in your computer or workstation.
Testing the LAN Path to Your Router
You can ping the router from your computer to verify that the LAN path to your router is set up
correctly.
To ping the router from a running Windows 95 or later:
1.
From the Windows toolbar, click on 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:
3.
Click on 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
Page 38 / 46
NETGEAR Router Setup Manual
6-6
Troubleshooting Common Problems
August 2004
If the path is not functioning correctly, you could have one of the following problems:
•
Wrong physical connections
—
Make sure the LAN port LED is on. If the LED is off, follow the instructions in
“LAN
or Internet (WAN) Port Lights Not On
” on
page 6-2
.
—
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 computer or workstation.
—
Verify that the IP address for your router and your workstation are correct and that the
addresses are on the same subnet.
Testing the Path from Your Computer to a Remote Device
After verifying that the LAN path works correctly, test the path from your computer to a remote
device. From the Windows run menu, 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 computer has the IP address of your router listed as the default gateway. If
the IP configuration of your computer is assigned by DHCP, this information will not be
visible in your computer’s Network Control Panel. Verify that the IP address of the router
is listed as the default gateway as described in
“Install or Verify Windows Networking
Components” on page C-9
.
—
Check to see that the network address of your computer (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 computer, enter that host name as the Account
Name in the Basic Settings menu.
Page 39 / 46
NETGEAR Router Setup Manual
Troubleshooting Common Problems
6-7
August 2004
—
Your ISP could be rejecting the Ethernet MAC addresses of all but one of your computers.
Many broadband ISPs restrict access by only allowing traffic from the MAC address of
your broadband modem, but some ISPs additionally restrict access to the MAC address of
a single computer connected to that modem. If this is the case, you must log in to the
router and use the Basic Settings menu to configure your router to “clone” or “spoof” the
MAC address from the authorized computer.
Restoring the Default Configuration and Password
This section explains how to restore the factory default configuration settings, changing the
router’s administration password to
password
. You can erase the current configuration and restore
factory defaults in two ways:
•
Use the Erase function of the router (see
“Erasing the Configuration” on page 5-3
).
•
Use the Default Reset button on the rear panel of the router. Use this method for cases when
the administration password or IP address is not known.
To restore the factory default configuration settings without knowing the administration password
or IP address, you must use the Default Reset button on the rear panel of the router.
1.
Press and hold the Default Reset button until the power light blinks on (about 10 seconds).
2.
Release the Default Reset button and wait for the router to reboot.
If the router fails to restart or the power light continues to blink or turns solid amber, the unit
may be defective. If the error persists, you might have a hardware problem and should contact
technical support.
Page 40 / 46
NETGEAR Router Setup Manual
6-8
Troubleshooting Common Problems
August 2004

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