Symptoms And How To Handle Them - Oki C9600 Service Manual

7.7.2 Symptoms and How to Handle Them

Only certain computers cannot communicate/Some computers can communicate while
others cannot
Phenomenon:
Though connected to the same wireless network, some computers can communicate while others
cannot.
Possible cause
In Ad hock mode, wireless computer's
wireless network setting is incorrect.
In Infrastructure mode, computer's wired
network settings are incorrect.
Infrastructure mode, there's a problem in
the LAN cable and/or hub connected to the
computer.
C9600's 'IP Filtering' setting is incorrect.
Cannot communicate only with certain applications/utilities/Cannot communicate only
with certain protocols.
Phenomenon:
Of applications/utilities that run on the same computer, some cannot communicate with C9600
while others can.
Possible cause
Application/utility settings are incorrect.
Protocols such as IPX/SPX, Ether Talk and
NetBEUI other than TCP/IP are used.
C9600's 'Security' setting is incorrect.
42930511TH Rev. 2
Check the differences between the wireless settings (SSID, Authentication/
Encryption settings and Channel) and the network settings (IP address,
Subnet mask and Default gateway) of the wireless computer that cannot
communicate and the settings of the wireless computer that can communi-
cate, and set the wireless computer that cannot communicate correctly.
Check the differences in the network settings (IP address, Subnet mask
and Default gateway) of the computer that cannot communicate and the
settings of the computer that can communicate, and set the computer that
cannot communicate correctly.
Check if the LAN cable and hub connected to the computer that cannot
communicate are working correctly.
In the 'IP Filtering' of the C9600 wireless LAN card, set so as to allow
the computer that cannot communicate to connect.
You must set 'IP Filtering' of the wired LAN interface and 'IP Filtering' of
the wireless LAN card separately.
Recheck the send destination settings of the applications/utilities and the
network related settings, and set them correctly.
Change the application/utility setting to use the TCP/IP.
(The C9600 wireless LAN card supports only the TCP/IP.)
Set the service to be used in the applications/utilities ENABLE in 'Secu-
rity' setting of the C9600 wireless LAN card.
* You must set 'Security' of the wired LAN interface and 'Security' of the
wireless LAN card separately.
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