3Com WL-455 User Manual

Also see for 3CRWE725075: Conversion guide Configuration guide

50No operation. Verify the access point configuration.Review access point firmware revisions and update firmwareif necessary.Make sure that there are no duplicate IP addresses on thenetwork. Unplug the access point and ping the assignedaddress to make sure that no other device responds to thataddress.Access point powers up, butdoes not associate with wirelessclients.Confirm that the service area on the access point matches thaton the clients.Verify that the clients are operating correctly.Make sure that security settings on the access point matchthose on the clients.Make sure that the access point antennas are positionedproperly.Check the range and move clients closer if necessary.Mobile users do not haveroaming access to the accesspoint.Make sure that all access points and wireless devices in theESS in which mobile users can roam are configured to thesame 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 forloose connections.Check the wired network topology and configurationfor malfunctions.Running on a computerconnected to the wired LAN,the 3Com Device Managercannot find an access point.The 3Com Device Manager cannot discover devices acrossrouters. Make sure that the computer is connected on the samesegment as the access point.After you specify an IP addressfor an access point, the 3ComDevice Manager continues topoint to the old IP addresswhen you select the accesspoint in the Wireless NetworkTree.In the 3Com Device Manager window click the Refreshbutton to refresh the Wireless Network Tree. Then click theaccess point in the Wireless Network Tree and clickProperties. The IP address you specified is now listed. If youwant to continue configuring the access point,click Configure.Symptom Solutions