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Page 146 / 185 Scroll up to view Page 141 - 145
Troubleshooting
146
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Router Not On
When you turn the power on, the Power, LAN, Wireless, DSL, and Internet LEDs should light
as described here. If they do not, refer to the sections that follow for help.
1.
When power is first applied, the Power LED lights.
2.
After approximately 10 seconds, other LEDs light as follows:
a.
The LAN ports LED lights when any local port is connected.
b.
The 2.4 GHz and 5 GHz Wireless LEDs light.
c.
The DSL LED lights when there is a link through the ADSL phone lines.
d.
The Internet LED lights to indicate a connection to the ISP.
Power
LAN ports
DSL
Internet
5 GHZ Wireless
USB port
Wireless On/Off button
WPS On/Off button
2.4 GHz Wireless
USB
Figure 60. Front panel LEDs
Power LED Is Off
If the Power and other LEDs are off when your router is turned on:
•
Check that the power cord is correctly connected to your router and the power supply
adapter is correctly connected to a functioning power outlet.
•
Check that you are using the 12V DC power adapter supplied by NETGEAR for this
product.
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Troubleshooting
147
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
If the error persists, you could have a hardware problem and should contact NETGEAR
technical support.
Power LED Is Red
When the router is turned on, it performs a power-on self-test. If the Power LED turns red
after a few seconds or at any other time during normal operation, there is a fault within the
router.
If the Power LED turns red to indicate a router fault, turn the power off and on to see if the
wireless modem router recovers. If the power LED is still red 1 minute after power-up:
•
Turn the power off and on one more time to see if the wireless modem router recovers.
•
Clear the router’s configuration to factory defaults as explained in
Factory Settings
on
page 156. This sets the router’s IP address to 192.168.0.1.
If the error persists, you could have a hardware problem and should contact NETGEAR
technical support.
LAN LED Is Off
If the LAN LED does not light when the Ethernet connection is made, check the following:
•
The Ethernet cable connections are secure at the wireless modem router and at the hub
or workstation.
•
The power is turned on to the connected hub or workstation.
Wireless LEDs Are Off
If the 2.4 GHz and 5 GHz Wireless LEDs do not light, the radios might be turned off. Press
the
Wireless On/Off
button on the front panel
to turn the radios back on.
DSL or Internet LED Is Off
If the DSL or Internet LED does not light, check to make sure that you are using the correct
cable. When connecting the ADSL or Ethernet WAN port, use the cables that were supplied
with the wireless modem router. If the DSL or Internet LED is still off, this could mean that
there is no ADSL or fiber/cable modem service or the cable connected to the ADSL or
Ethernet WAN port is bad.
See also
DSL LED Is Off
on page 148.
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Troubleshooting
148
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
No ISP Connection
If your router cannot access the Internet, first check the ADSL connection, and then check
the WAN TCP/IP connections. See
Figure 60, Front panel LEDs
on page 146 for the location
of the LEDs.
ADSL Link
First determine whether you have an ADSL link with the service provider. The state of this
connection is indicated by the DSL LED.
DSL LED Is Green or Blinking Green
You have a good ADSL connection. The service provider has connected your line correctly,
and your wiring is correct.
DSL LED Is Blinking Amber
Your wireless modem router is attempting to make an ADSL connection with the service
provider. The LED should turn green within several minutes.
If the DSL LED does not turn green, disconnect all telephones on the line. If this solves the
problem, reconnect the telephones one at a time and use a microfilter on each telephone as
described in
ADSL Microfilters
on page 18. If you connect the microfilters correctly, you
should be able to connect all your telephones.
If disconnecting telephones does not result in a green DSL LED, there might be a problem
with your wiring. If the telephone company has tested the ADSL signal at your network
interface device (NID), you might have poor-quality wiring in your house.
DSL LED Is Off
First disconnect all telephones on the line. If this solves the problem, reconnect the
telephones one at a time and use a microfilter on each telephone. If the microfilters are
connected correctly, you should be able to connect all your telephones.
If disconnecting telephones does not result in a green DSL LED, check for the following:
•
Check that the telephone company has made the connection to your line and tested it.
•
Verify that you are connected to the correct telephone line. If you have more than one
phone line, be sure that you are connected to the line with the ADSL service. It could be
necessary to use a swapper if your ADSL signal is on pins 1 and 4 or the RJ-11 jack. The
wireless modem router uses pins 2 and 3.
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Troubleshooting
149
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Internet LED Is Red
If the Internet LED is red, the device could not connect to the Internet. Verify the following:
•
Check that your login credentials are correct. See
Log In to the N600 Modem Router
on
page 24 for more information.
•
Check that the information you entered on the Basic Settings screen is correct. See
Manual Setup (Basic Settings)
on page 28.
•
Check with your ISP to verify that the multiplexing method, VPI, and VCI settings on the
ADSL settings screen are correct.
•
Find out if the ISP is having a problem. If it is, wait until that problem is cleared up and try
again.
Cannot Obtain an Internet IP Address
If your wireless modem router cannot access the Internet, and your Internet LED is green or
blinking green, check whether the wireless modem router can obtain an Internet IP address
from the ISP. Unless you have been assigned a static IP address, your wireless modem
router has to request an IP address from the ISP.
You can determine whether the request was successful as follows:
1.
Access the router menus at
and log in.
2.
Under Maintenance, select
Router Status
and check that an IP address shows for the WAN
port. If 0.0.0.0 shows, your wireless modem router has not obtained an IP address from your
ISP.
If your router cannot obtain an IP address from the ISP, the problem might be one of the
following:
•
If you have selected a login program, the service name, user name, or password might be
incorrect. See
Debug PPPoE or PPPoA
on page 150.
•
Your ISP might check for your computer’s host name. Assign the computer host name of
your ISP account to the wireless modem router in the browser-based Setup Wizard. See
Setup Wizard
on page 27 for more information.
•
Your ISP allows only one Ethernet MAC address to connect to the Internet, and might
check for your computer’s MAC address. In this case, do one of the following:
-
Inform your ISP that you have bought a new network device and ask them to use the
router’s MAC address.
-
Configure your router to spoof your computer’s MAC address through the Basic
Settings screen. See
Manual Setup (Basic Settings)
on page 28.
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Troubleshooting
150
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Debug PPPoE or PPPoA
Debug the PPPoE or PPPoA connection as follows:
1.
Access the router menus at
and log in.
2.
Under Maintenance, select
Router Status
.
3.
Click the
Connection Status
button.
4.
If all of the steps indicate OK, your PPPoE or PPPoA connection is working.
5.
If any of the steps indicate Failed, you can attempt to reconnect by clicking
Connect
.
The wireless modem router continues to attempt to connect indefinitely. If you do not
connect after several minutes, check that the service name, user name, and password
you are using are correct. Also check with your ISP to be sure that there is no problem
with their service.
Note:
Unless you connect manually, the wireless modem router does not
authenticate with PPPoE or PPPoA until data is transmitted to the
network.
Cannot Load an Internet Web Page
If your wireless modem router can obtain an IP address, but your browser cannot load any
Internet web pages:
•
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 wireless modem
router’s configuration, reboot your computer, and verify the DNS address. Alternately, you
can configure your computer manually with DNS addresses, as explained in your
operating system documentation
.
•
Your computer might not have the wireless modem router configured as its TCP/IP
wireless modem router.
If your computer obtains its information from the wireless modem router by DHCP, reboot
the computer, and verify the wireless modem router address.
TCP/IP Network Not Responding
Most TCP/IP terminal devices and routers have a ping utility for sending an echo request
packet to the designated device. The device responds with an echo reply to tell whether a
TCP/IP network is responding to requests.
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