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Chapter 36 Troubleshooting
VMG4380-B10A / VMG4325-B10A User’s Guide
286
36.3
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 21
.
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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Chapter 36 Troubleshooting
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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 21
.
3
Turn the Device off and on.
4
If the problem continues, contact your ISP.
36.4
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.
What wireless security modes does my Device support?
Wireless security is vital to your network. It protects communications between wireless stations,
access points and the wired network.
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Chapter 36 Troubleshooting
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The available security modes in your Device are as follows:
•
WPA2-PSK:
(recommended) This uses a pre-shared key with the WPA2 standard.
•
WPA-PSK:
This has the device use either WPA-PSK or WPA2-PSK depending on which security
mode the wireless client uses.
•
WPA2:
WPA2 (IEEE 802.11i) is a wireless security standard that defines stronger encryption,
authentication and key management than WPA. It requires the use of a RADIUS server and is
mostly used in business networks.
•
WPA:
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. It requires the use
of a RADIUS server and is mostly used in business networks.
•
WEP:
Wired Equivalent Privacy (WEP) encryption scrambles the data transmitted between the
wireless stations and the access points to keep network communications private.
36.5
USB Device Connection
The Device fails to detect my USB device.
1
Disconnect the USB device.
2
Reboot the Device.
3
If you are connecting a USB hard drive that comes with an external power supply, make sure it is
connected to an appropriate power source that is on.
4
Re-connect your USB device to the Device.
36.6
UPnP
When using UPnP and the Device reboots, my computer cannot detect UPnP and refresh
My
Network Places > Local Network
.
1
Disconnect the Ethernet cable from the Device’s LAN port or from your computer.
2
Re-connect the Ethernet cable.
The
Local Area Connection
icon for UPnP disappears in the screen.
Restart your computer.
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I cannot open special applications such as white board, file transfer and video when I use the
MSN messenger.
1
Wait more than three minutes.
2
Restart the applications.
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Chapter 36 Troubleshooting
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