3Com WL-455 manual Click Configure

Symptom	Solutions
No operation.	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.
Access point powers up, but	Confirm that the service area on the access point matches that
does not associate with wireless	on the clients.
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.
Mobile users do not have	Make sure that all access points and wireless devices in the
roaming access to the access	ESS in which mobile users can roam are configured to the
point.	same WEP setting, SSID, and authentication settings.
Slow or erratic performance.	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.
Running on a computer	The 3Com Device Manager cannot discover devices across
connected to the wired LAN,	routers. Make sure that the computer is connected on the same
the 3Com Device Manager	segment as the access point.
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.

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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