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Page 321 / 404 Scroll up to view Page 316 - 320
VMG8324-B10A / VMG8324-B30A Series User’s Guide
321
C
HAPTER
41
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.
•
Power, Hardware Connections, and LEDs
•
Device Access and Login
•
Internet Access
•
Wireless Internet Access
•
USB Device Connection
•
UPnP
41.1
Power, Hardware Connections, and LEDs
The Device does not turn on. None of the LEDs turn on.
1
Make sure the Device is turned on.
2
Make sure you are using the power adaptor or cord included with the Device.
3
Make sure the power adaptor or cord is connected to the Device and plugged in to an appropriate
power source. Make sure the power source is turned on.
4
Turn the Device off and on.
5
If the problem continues, contact the vendor.
One of the LEDs does not behave as expected.
1
Make sure you understand the normal behavior of the LED. See
Section 1.5 on page 20
.
2
Check the hardware connections.
3
Inspect your cables for damage. Contact the vendor to replace any damaged cables.
4
Turn the Device off and on.
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322
5
If the problem continues, contact the vendor.
41.2
Device Access and Login
I forgot the IP address for the Device.
1
The default LAN IP address is 192.168.1.1.
2
If you changed the IP address and have forgotten it, you might get the IP address of the Device by
looking up the IP address of the default gateway for your computer. To do this in most Windows
computers, click
Start > Run
, enter
cmd
, and then enter
ipconfig
. The IP address of the
Default
Gateway
might be the IP address of the Device (it depends on the network), so enter this IP
address in your Internet browser.
3
If this does not work, you have to reset the device to its factory defaults. See
Section 1.6 on page
22
.
I forgot the password.
1
The default admin password is
1234
.
2
If this does not work, you have to reset the device to its factory defaults. See
Section 1.6 on page
22
.
I cannot see or access the
Login
screen in the web configurator.
1
Make sure you are using the correct IP address.
•
The default IP address is
192.168.1.1
.
•
If you changed the IP address (
Section 7.2 on page 109
), use the new IP address.
•
If you changed the IP address and have forgotten it, see the troubleshooting suggestions for
I
forgot the IP address for the Device.
2
Check the hardware connections, and make sure the LEDs are behaving as expected. See
Section
1.5 on page 20
.
3
Make sure your Internet browser does not block pop-up windows and has JavaScripts and Java
enabled. See
Appendix C on page 357
.
4
If it is possible to log in from another interface, check the service control settings for HTTP and
HTTPS (
Maintenance > Remote MGMT
).
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323
5
Reset the device to its factory defaults, and try to access the Device with the default IP address.
See
Section 1.6 on page 22
.
6
If the problem continues, contact the network administrator or vendor, or try one of the advanced
suggestions.
Advanced Suggestions
•
Make sure you have logged out of any earlier management sessions using the same user account
even if they were through a different interface or using a different browser.
•
Try to access the Device using another service, such as Telnet. If you can access the Device,
check the remote management settings and firewall rules to find out why the Device does not
respond to HTTP.
I can see the
Login
screen, but I cannot log in to the Device.
1
Make sure you have entered the password correctly. The default admin password is
1234
. The field
is case-sensitive, so make sure [Caps Lock] is not on.
2
You cannot log in to the web configurator while someone is using Telnet to access the Device. Log
out of the Device in the other session, or ask the person who is logged in to log out.
3
Turn the Device off and on.
4
If this does not work, you have to reset the device to its factory defaults. See
Section 41.1 on page
321
.
I cannot Telnet to the Device.
See the troubleshooting suggestions for
I cannot see or access the Login screen in the web
configurator.
Ignore the suggestions about your browser.
I cannot use FTP to upload / download the configuration file. / I cannot use FTP to upload
new firmware.
See the troubleshooting suggestions for
I cannot see or access the Login screen in the web
configurator.
Ignore the suggestions about your browser.
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324
41.3
Internet Access
I cannot access the Internet.
1
Check the hardware connections, and make sure the LEDs are behaving as expected. See the
Quick Start Guide
and
Section 1.5 on page 20
.
2
Make sure you entered your ISP account information correctly in the
Network Setting >
Broadband
screen. These fields are case-sensitive, so make sure [Caps Lock] is not on.
3
If you are trying to access the Internet wirelessly, make sure that you enabled the wireless LAN in
the Device and your wireless client and that the wireless settings in the wireless client are the same
as the settings in the Device.
4
Disconnect all the cables from your device and reconnect them.
5
If the problem continues, contact your ISP.
I cannot access the Internet through a DSL connection.
1
Make sure you have the
DSL WAN
port connected to a telephone jack (or the DSL or modem jack
on a splitter if you have one).
2
Make sure you configured a proper DSL WAN interface (
Network Setting > Broadband
screen)
with the Internet account information provided by your ISP and that it is enabled.
3
Check that the LAN interface you are connected to is in the same interface group as the DSL
connection (
Network Setting > Interface Group
).
4
If you set up a WAN connection using bridging service, make sure you turn off the DHCP feature in
the
LAN
screen to have the clients get WAN IP addresses directly from your ISP’s DHCP server.
I cannot connect to the Internet using a second DSL connection.
ADSL and VDSL connections cannot work at the same time. You can only use one type of DSL
connection, either ADSL or VDSL connection at one time.
I cannot access the Internet anymore. I had access to the Internet (with the Device), but my
Internet connection is not available anymore.
1
Your session with the Device may have expired. Try logging into the Device again.
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325
2
Check the hardware connections, and make sure the LEDs are behaving as expected. See the
Quick Start Guide
and
Section 1.5 on page 20
.
3
Turn the Device off and on.
4
If the problem continues, contact your ISP.
41.4
Wireless Internet Access
What factors may cause intermittent or unstabled wireless connection? How can I solve this
problem?
The following factors may cause interference:
•
Obstacles: walls, ceilings, furniture, and so on.
•
Building Materials: metal doors, aluminum studs.
•
Electrical devices: microwaves, monitors, electric motors, cordless phones, and other wireless
devices.
To optimize the speed and quality of your wireless connection, you can:
•
Move your wireless device closer to the AP if the signal strength is low.
•
Reduce wireless interference that may be caused by other wireless networks or surrounding
wireless electronics such as cordless phones.
•
Place the AP where there are minimum obstacles (such as walls and ceilings) between the AP and
the wireless client.
•
Reduce the number of wireless clients connecting to the same AP simultaneously, or add
additional APs if necessary.
•
Try closing some programs that use the Internet, especially peer-to-peer applications. If the
wireless client is sending or receiving a lot of information, it may have too many programs open
that use the Internet.
What is a Server Set ID (SSID)?
An SSID is a name that uniquely identifies a wireless network. The AP and all the clients within a
wireless network must use the same SSID.

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