Troubleshooting The Wlan; Troubleshooting - Fujitsu LifeBook E8110 User Manual

E8110.book Page 96 Tuesday, February 28, 2006 2:59 PM
L i f e B o o k E S e r i e s N o t e b o o k - A p p e n d i x A

Troubleshooting the WLAN

TROUBLESHOOTING

Causes and countermeasures for troubles you may encounter while using your wireless LAN are described in the
following table.
Problem Possible Cause
Unavailable Incorrect network
name (SSID) or
network
network key
connection
Weak received signal
strength and/or link
quality
The WLAN device
has been deactivated
or disabled
The computer to be
connected is turned
off
RF interference from
Access Points or
other wireless
networks
Wireless network
authentication has
failed
Incorrectly
configured network
settings
Incorrect IP address
configuration
96
Possible Solution
Ad hoc connection: verify that the network names (SSID's) and network
keys (WEP) of all computers to be connected have been configured
correctly. SSID's and WEP key values must be identical on each machine.
Access Point (Infrastructure) connection: set the network name (SSID)
and network key to the same values as those of the access point.
Set the Network Authentication value identically to that of the Access
(See Configuration Using Intel PROSet for Wireless Utility on
Point
page 92 for more information)
. Please consult your network adminis-
trator for this value, if necessary.
Ad hoc connection: Retry connection after shortening the distance to
the destination computer or removing any obstacles for better sight.
Access Point (Infrastructure) connection: Retry connection after short-
ening the distance to the access point or removing any obstacles for
better sight.
To check the wave condition, refer to the following page: "Confirming
the status of the radio waves" on page 95.
Check if the wireless switch is turned ON. Also verify "Disable Radio" is
not checked in "Network setting" window.
Check if the computer to be connected is turned ON.
The use of identical or overlapping RF channels can cause interference
with the operation of the WLAN device. Change the channel of your
Access Point to a channel that does not overlap with the interfering
device.
Re-check your Network Authentication, Encryption, and Security
settings. Incorrectly configured security settings such as an incorrectly
typed WEP key, a mis-configured LEAP username, or an incorrectly
chosen authentication method will cause the LAN device to associate
but not authenticate to the wireless network.
Recheck the configuration of your network settings.
For the method of checking, refer to the following page:·"Connection to
the Network" on page 93.
This only applies to networks using static IP addresses. Please contact
your network administrator for the correct settings.