Observer®Software and WirelessLANs
18 ObserverUser Manual Addendum(Wireless)
Wireless ObserverTroubleshooting

Most problems with wireless analysis are the result of problems unrelated to

theO bservers oftwareor its config uration,such as un configuredo r

incorrectlyc onfiguredW EP keys. Make sure that you have the wireless NIC

workingwith your network as describedin the vendor supplied manuals

before you installObserver or the Network Instruments custom NIC driver.

Thet able below describes some problems that you might run into, their likely

causes,and the remedies to c orrectthe problems.

Symptom Possible Cause Remedy

Observerdoes not display
anypro tocol or IP statis-
tics.
WEPnot activated, or incor-
rectW EP key(s). Configurethe WEP key(s).
SeeConfiguring

Observerfor Wireless

Operationon page 6of

thismanual.
Expert Analysis doesn’t
displayanything. WEPnot activated, or incor-
rectW EP key(s). Configurethe WEP key(s).
SeeConfiguring

Observerfor Wireless

Operationon page 6of

thismanual.
Network drive becomes
disconnected after running
Observer.
Thiscan happen when you
reconfigure the driver (eithe r
throughvendor utilitiesor
Windows)while Observeris
running.
UseExplorertoreconnectto
thed rive.
Wireless NIC becomes dis-
associatedafter running
Observer
Thiscan happen when you
reconfigure the driver (eithe r
throughvendor utilitiesor
Windows)while Observeris
running.
Re-install and configure the
NetworkInstrumentswire-
lessanalyzer driver.