Wireless Troubleshooting
Is it a hardware problem ?
If following symptoms happen on the access point
- None of
the LEDs turn on when I plug in the power adapter
Make sure you are using the supplied power adapter and
that it is plugged in to an appropriate power source. Check that the power
source is turned on. If the problem persists, you may have a hardware problem.
In this case, you should contact your local vendor.
- The
Access Point reboots automatically sometimes
The supplied power to Access Point is too low. Check that the
Access Point is receiving enough power. ¡@
How can I check to be sure if I
am interfered or not ?
There may not be an easy or quick answer to this. One
thing to notice first is whether the problems are continuous or intermittent.
Interference usually occurs intermittently, or else it would have likely been
noticed when the link was first commissioned.
If
I've confirmed it is an
interference problem. What should I do?
Change the location and choose other radio channel to see
whether the impact of the interference decreases and the link quality improves.
What should I do if I have low
signal or high noise ?
To improve the signal, check or get the antennas with reverse SMA type
connectors. For noise problems, please shield or remove the interference. If the
situation doesn't improve, please change radio channels.
Unable to associate to the access
point
- Verify
that the PC card or PCI adapter is installed correctly.
- Is the
signal strength and link quality good ? Move closer to the access point to
see if it helps ? If not, you may have radio problems. Make sure you are in
the wireless coverage of your access point.
- Temporarily
disable the WLAN MAC Filter function on the access point. If this solves the
problem, check to make sure the MAC address of the wireless client is not
contained in the list of denied MAC addressed.
- Temporarily
disable any security feature on both the access point and the client. If
this solves the problem, check to make sure that the Wired Equivalent
Privacy (WEP) key you use to transmit data is set up exactly the same on
your AP and on any wireless devices with which it associates.
- Make
sure the configuration on access point and wireless consistent. Verify that
the configuration for the SSID on PC matches the access point's ESSID.
Unable to authenticate to the
access point
If your client adapter is unable to authenticate to an
access point, check the security settings of your client adapter and the access
point. These include the following areas:
Authentication with shared key (WEP):
If you use WEP shared key to authenticate the wireless
clients, you should
check whether following configuration parameters on both AP and wireless clients match:
- WEP key
values, WEP key sizes, WEP activation, and WEP transmit key parameters
¡@
Unable
to transmit traffic
- Verify
that the client has passed association and authentication.
- Make
sure the client is configured with exact IP setting or get a valid IP
address from DHCP server. You can go to a DOS prompt and type: ipconfig
and press Enter to verify this.
- Ping the
gateway in your network. A response other than Request timed out indicates a
successful ping.
- Enable
packet trace function on the access point Verify that the Wired Equivalent
Privacy (WEP) key on the client is set up exactly the same on your AP.
What should I get back
to my technical support for analysis ?
Following information are helpful to your technical
support to troubleshoot your problem, please get back the answer and associated
files to your support:
- Is this
a new or existing installation ?
- Did it
work before ?
- Have
there been any recent changes that might affect the LAN, the client
workstation or the radio environment ?
- What is
the firmware version you are using now ? Do you have uploaded firmware
recently ?
- Is
addresses, networking information and ROMFILE available ? If yes, please
send it (include your password) to your support.
All contents copyright © 2006 ZyXEL Communications Corporation.