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Page 116 / 134 Scroll up to view Page 111 - 115
NETGEAR Wireless-N Router WNR2000 User Manual
7-6
Troubleshooting
v1.0, June 2008
•
If you are attempting to set up your NETGEAR router as an additional router behind an
existing router in your network, consider replacing the existing router instead. NETGEAR
does not support such a configuration.
•
If you are attempting to set up your NETGEAR router as a replacement for an ADSL gateway
in your network, the router cannot perform many gateway services, for example, converting
ADSL or Cable data into Ethernet networking information. NETGEAR does not support such
a configuration.
Checking the Internet Service Connection
If you can access your router, but your router is unable to access the Internet, review the topics in
this section:
•
“Obtaining an Internet IP Address”
•
“Troubleshooting PPPoE”
•
“Troubleshooting Internet Browsing”
Obtaining an Internet IP Address
If your wireless router is unable to access the Internet, and your Internet light is amber, check the
wireless router to see if it is able to get an Internet IP address from your service provider. Unless
you have a static IP address, your wireless router automatically requests an IP address from your
service provider.
To check your wireless router’s Internet IP address:
1.
Log in to the wireless router.
2.
Select
Router Status
, under Maintenance in the main menu, to check that an IP address is
shown for the Internet Port. If 0.0.0.0 is shown, your wireless router has not obtained an IP
address from your service provider.
If your router is unable to obtain an IP address from the your service provider, the problem might
be one of the following:
Page 117 / 134
NETGEAR Wireless-N Router WNR2000 User Manual
Troubleshooting
7-7
v1.0, June 2008
•
You might need to force your cable or DSL modem to recognize your new router by restarting
your network, in the sequence described in the
NETGEAR Wireless-N Router Setup Manual.
•
Your service provider might require a login. Ask your service provider whether they require a
PPP over Ethernet (PPPoE) login (see
“Troubleshooting PPPoE” on page 7-7
).
•
You might have incorrectly set the service name, user name or password. Review your router’s
Basic Settings
screen.
•
Your service provider might check for your computer's host name. Assign the computer Host
Name of your ISP account to the wireless router on the
Basic Settings
screen.
•
Your service provider might only allow one Ethernet MAC address to connect to the Internet,
and check for your computer’s MAC address. If this is the case:
–
Inform your service provider that you have bought a new network device, and ask them to
use the wireless router’s MAC address, or
–
Configure your router to spoof your computer’s MAC address. On the
Basic Settings
screen in the Router MAC Address section, select “Use this Computer’s MAC Address”
and click
Apply.
Then restart your network in the correct sequence (see the
NETGEAR
Wireless-N Router Setup Manual
for instructions).
Troubleshooting PPPoE
If you are using PPPoE, try troubleshooting your Internet connection.
To troubleshoot a PPPoE connection:
1.
Log in to the wireless router.
2.
Select
Router Status
under
Maintenance
on the main menu.
3.
Click
Connection Status
. If all of the steps indicate “OK,” then your PPPoE connection is up
and working.
If any of the steps indicate “Failed,” you can attempt to reconnect by clicking
Connect.
The
wireless router will continue to attempt to connect indefinitely.
If you cannot connect after several minutes, you might be using an incorrect service name,
user name, or password. There also might be a provisioning problem with your ISP.
Note:
Unless you connect manually, the wireless router will not authenticate using
PPPoE until data is transmitted to the network.
Page 118 / 134
NETGEAR Wireless-N Router WNR2000 User Manual
7-8
Troubleshooting
v1.0, June 2008
Troubleshooting Internet Browsing
If your wireless router can obtain an IP address but your computer is unable to load any web pages
from the Internet, check the following:
•
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 will provide the addresses of one or two DNS servers for your use. If you
entered a DNS address during the wireless router’s configuration, restart your computer.
Alternatively, you can configure your computer manually with a DNS address, as explained in
the documentation for your computer
.
•
Your computer might not have the wireless router configured as its default gateway
.
Reboot the computer and verify that the wireless router address (www.routerlogin.net) is listed
by your computer as the default gateway address.
•
You might be running login software that is no longer needed
. If your ISP provided a
program to log you in to the Internet (such as WinPoET), you no longer need to run that
software after installing your router. You might need to go to Internet Explorer and select
Tools > Internet Options
, click the Connections tab, and select
Never dial a connection
.
If the wireless router does not save changes you have made in the browser interface, check the
following:
•
When entering configuration settings, be sure to click
Apply
before moving to another screen
or tab, or your changes could be lost.
•
Click
Refresh
or
Reload
in the Web browser. The changes might have occurred, but the Web
browser might be caching the old configuration.
Troubleshooting Your Network Using the Ping Utility
Most network 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 network is
made very easy by using the ping utility in your computer or workstation. This section includes:
•
“Testing the LAN Path to Your Router”
•
“Testing the Path from Your Computer to a Remote Device”
Page 119 / 134
NETGEAR Wireless-N Router WNR2000 User Manual
Troubleshooting
7-9
v1.0, June 2008
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 PC:
1.
From the Windows toolbar, click Start, and then select
Run
.
2.
In the field provided, type
ping
followed by the IP address of the router, as in this example:
ping www.routerlogin.net
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 functioning correctly, you could have one of the following problems:
•
Wrong physical connections
–
For a wired connection, make sure that the numbered LAN port light is on for the port
to which you are connected. If the light is off, follow the instructions in
“Troubleshooting Basic Functions” on page 7-2
.
–
Check that the appropriate LEDs are on for your network devices. If your router and
computer are connected to a separate Ethernet switch, make sure that the link lights
are on for the switch ports that are connected to your computer and router.
•
Wrong network configuration
–
Verify that the Ethernet card driver software and TCP/IP software are both installed
and configured on your computer.
–
Verify that the IP address for your router and your computer are correct and that the
addresses are on the same subnet.
Page 120 / 134
NETGEAR Wireless-N Router WNR2000 User Manual
7-10
Troubleshooting
v1.0, June 2008
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.
1.
From the Windows toolbar, click the Start button, and then 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 like those shown 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 is 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 the online document you can access from
“Preparing Your
Network” in Appendix B
.
•
Check to see that the network address of your computer (the portion of the IP address specified
by the subnet mask) 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 screen.
•
Your ISP could be rejecting the Ethernet MAC addresses of all but one of your computers.
Many broadband ISPs restrict access by allowing traffic only 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 configure your router to
“clone” or “spoof” the MAC address from the authorized computer. For more information, see
“Using the Setup Manual” on page 1-1
.
Problems with Date and Time
Select
E-mail
under Content Filtering in the main menu to display a screen that shows the current
date and time of day. The WNR2000 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:

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