Observer User Manual Addendum 802.11b Wireless Installation & Operation

Observer® Software and Wireless LANs
18 Observer User Manual Addendum (Wireless)
Wireless Observer Troubleshooting
Most problems with wireless analysis are the result of problems unrelated to
the Observer software or its configuration, such as unconfigured or
incorrectly configured WEP keys. Make sure that you have the wireless NIC
working with your network as described in the vendor supplied manuals
before you install Observeror the Network Instruments custom NIC driver.
The table below describes some problems that you might run into, their likely
causes, and the remedies to correct the problems.
Symptom Possible Cause Remedy
Observer does not display
any protocol or IP statis-
tics.
WEP not activated, or incor-
rect WEP key(s).
Configure the WEP key(s).
See
Configuring
Observer for Wireless
Operation on page 6
of
this manual.
Expert Analysis doesn’t
display anything.
WEP not activated, or incor-
rect WEP key(s).
Configure the WEP key(s).
See
Configuring
Observer for Wireless
Operation on page 6
of
this manual.
Network drive becomes
disconnected after running
Observer.
This can happen when you
reconfigure the driver (either
through vendor utilities or
Windows) while Observer is
running.
UseExplorertoreconnectto
the drive.
Wireless NIC becomes dis-
associated after running
Observer
This can happen when you
reconfigure the driver (either
through vendor utilities or
Windows) while Observer is
running.
Re-install and configure the
Network Instruments wire-
less analyzer driver.