1. Home
    2. /
  2. Manuals
    3. /
  3. NETGEAR
    4. /
  4. DGFV338
    5. /
  5. 39
Page 191 / 212 Scroll up to view Page 186 - 190
Troubleshooting
8-1
v1.0, April 2007
Chapter 8
Troubleshooting
This chapter gives information about troubleshooting your ProSafe Wireless ADSL Modem VPN
Firewall Router. After each problem description, instructions are provided to help you diagnose
and solve the problem.
Basic Functions
After you turn on power to the firewall, the following sequence of events should occur:
1.
When power is first applied, verify that the PWR LED is on.
2.
After approximately 60 to 90 seconds, verify that:
a.
The TEST LED is not lit.
b.
The LAN port LEDs are lit for any local ports that are connected.
c.
The Internet port LED is lit.
If a port’s LED is lit, a link has been established to the connected device. If a LAN port is
connected to a 100 Mbps device, verify that the port’s 100 Mbps LED is green. If the port is
connected to a 10 Mbps device, the 10 Mbps LED will be green.
If any of these conditions does not occur, refer to the appropriate following section.
Power LED Not On
If the Power and other LEDs are off when your firewall is turned on:
•
Make sure that the power cord is properly connected to your firewall and that the power
supply adapter is properly connected to a functioning power outlet.
•
Check that you are using the 12 V DC power adapter supplied by NETGEAR for this product.
If the error persists, you have a hardware problem and should contact technical support.
Page 192 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
8-2
Troubleshooting
v1.0, April 2007
LEDs Never Turn Off
When the firewall is turned on, the LEDs turns on for about 10 seconds and then turn off. If all the
LEDs stay on, there is a fault within the firewall.
If all LEDs are still on one minute after power up:
•
Cycle the power to see if the firewall recovers.
•
Clear the firewall’s configuration to factory defaults. This will set the firewall’s IP address to
192.168.1.1. This procedure is explained in
“Restoring the Default Configuration and
Password” on page 8-7
.
If the error persists, you might have a hardware problem and should contact technical support.
LAN or Internet Port LEDs Not On
If either the LAN LEDs or Internet LED do not light when the Ethernet connection is made, check
the following:
•
Make sure that the Ethernet cable connections are secure at the firewall and at the hub or
workstation.
•
Make sure that power is turned on to the connected hub or workstation.
•
Be sure you are using the correct cable:
When connecting the firewall’s Internet port to a cable or DSL modem, use the cable that was
supplied with the cable or DSL modem. This cable could be a standard straight-through
Ethernet cable or an Ethernet crossover cable.
Troubleshooting the Web Configuration Interface
If you are unable to access the firewall’s Web Configuration interface from a PC on your local
network, check the following:
•
Check the Ethernet connection between the PC and the firewall as described in the previous
section.
•
Check the PC’s wireless settings and radio settings (if accessing the firewall using the wireless
features). Also check the Network Authentication scheme.
Page 193 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
Troubleshooting
8-3
v1.0, April 2007
•
Make sure your PC’s IP address is on the same subnet as the firewall. If you are using the
recommended addressing scheme, your PC’s address should be in the range of 192.168.1.2 to
192.168.1.254.
•
If your firewall’s IP address has been changed and you don’t know the current IP address,
clear the firewall’s configuration to factory defaults. This will set the firewall’s IP address to
192.168.1.1. This procedure is explained in
“Restoring the Default Configuration and
Password” on page 8-7
.
•
Make sure your browser has Java, JavaScript, or ActiveX enabled. If you are using Internet
Explorer, click Refresh to be sure the Java applet is loaded.
•
Try quitting the browser and launching it again.
•
Make sure you are using the correct login information. The factory default login name is
admin
and the password is
password
. Make sure that CAPS LOCK is off when entering this
information.
If the firewall does not save changes you have made in the Web Configuration Interface, check the
following:
•
When entering configuration settings, be sure to click the APPLY button before moving to
another menu or tab, or your changes are lost.
•
Click the Refresh or Reload button in the Web browser. The changes may have occurred, but
the Web browser may be caching the old configuration.
Troubleshooting the ISP Connection
If your firewall is unable to access the Internet, you should first determine whether the firewall is
able to obtain a WAN IP address from the ISP. Unless you have been assigned a static IP address,
your firewall must request an IP address from the ISP. You can determine whether the request was
successful using the Web Configuration Manager.
To check the WAN IP address:
1.
Launch your browser and select an external site such as www.netgear.com
Note:
If your PC’s IP address is shown as 169.254.x.x: Recent versions of Windows
and MacOS will generate and assign an IP address if the computer cannot
reach a DHCP server. These auto-generated addresses are in the range of
169.254.x.x. If your IP address is in this range, check the connection from the
PC to the firewall and reboot your PC.
Page 194 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
8-4
Troubleshooting
v1.0, April 2007
2.
Access the Main Menu of the firewall’s configuration at http://192.168.1.1
3.
Under the Management heading, select Router Status
4.
Check that an IP address is shown for the ADSL or Ethernet WAN Port (whichever port you
configured.)
If 0.0.0.0 is shown, your firewall has not obtained an IP address from your ISP.
If your firewall is unable to obtain an IP address from the ISP on the Ethernet port, you may need
to force your cable or DSL modem to recognize your new firewall by performing the following
procedure:
1.
Turn off power to the cable or DSL modem.
2.
Turn off power to your firewall.
3.
Wait 5 minutes and reapply power to the cable or DSL modem.
4.
When the modem’s LEDs indicate that it has reacquired sync with the ISP, reapply power to
your firewall.
If your firewall is unable to obtain an IP address from the ISP on the ADSL port, you may need to
force your internal ADSL modem to recognize your new firewall by performing the following
procedure:
1.
Turn off power to your firewall.
2.
Wait 5 minutes and reapply power to your firewall.
If your firewall is still unable to obtain an Ethernet IP address or an ADSL 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 a PPP over Ethernet (PPPoE) or some other type of login.
(If ADSL, ask if they require either a PPPoE or a PPPoA login.)
•
If your ISP requires a login, you may have incorrectly set the login name and password.
•
Your ISP may check for your PC’s host name.
Assign the PC 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 PC’s MAC address. In this case:
Inform your ISP that you have bought a new network device, and ask them to use the firewall’s
MAC address.
OR
Page 195 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
Troubleshooting
8-5
v1.0, April 2007
Configure your firewall to spoof your PC’s MAC address. This can be done in the Basic
Settings menu. Refer to
“Manually Configuring your ADSL Connection” on page 2-6
or
“Manually Configuring your Ethernet Connection” on page 2-8
.
If your firewall can obtain an IP address, but your PC is unable to load any Web pages from the
Internet:
•
Your PC may 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. You may configure your PC manually with DNS addresses, as explained
in your operating system documentation
.
•
Your PC may not have the firewall configured as its TCP/IP gateway.
Troubleshooting a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal devices and firewalls 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 PC or workstation.
Testing the LAN Path to Your Firewall
You can ping the firewall from your PC to verify that the LAN path to your firewall is set up
correctly.
To ping the firewall from a PC 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 firewall, 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:

Rate

4 / 5 based on 1 vote.

Popular NETGEAR Models

Famous Router IPs
Famous Router Companies
Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top