3Com 3CRWE870075A - Wireless LAN Access Point 8700 User Manual page 43

Symptom
No operation.
Access point powers up, but
does not associate with
wireless clients.
Mobile users do not have
roaming access to the access
point.
Slow or erratic performance.
Running on a computer
connected to the wired LAN,
the 3Com Device Manager
cannot find an access point.
After you specify an IP
address for an access point,
the 3Com Device Manager
continues to point to the old
IP address when you select
the access point in the
Wireless Network Tree.
Solutions
Verify the access point configuration.
Review access point firmware revisions and update
firmware if necessary.
Make sure that there are no duplicate IP addresses on the
network. Unplug the access point and ping the assigned
address to make sure that no other device responds to
that address.
Confirm that the service area on the access point matches
that on the clients.
Verify that the clients are operating correctly.
Make sure that security settings on the access point match
those on the clients.
Make sure that the access point antennas are positioned
properly.
Check the range and move clients closer if necessary.
Make sure that all access points and wireless devices in
the ESS in which mobile users can roam are configured to
the same WEP setting, SSID, and authentication settings.
Try changing the wireless channel on the access point.
Check the access point antennas, connectors, and cabling
for loose connections.
Check the wired network topology and configuration
for malfunctions.
The 3Com Device Manager cannot discover devices across
routers. Make sure that the computer is connected on the
same segment as the access point.
In the 3Com Device Manager window click the Refresh
button to refresh the Wireless Network Tree. Then click
the access point in the Wireless Network Tree and click
Properties. The IP address you specified is now listed. If
you want to continue configuring the access point,
click Configure.
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