3Com 3CRWE876075 User Manual

Also see for 8760 - Wireless Dual Radio 11a/b/g PoE Access Point: Product guide Datasheet Datasheet

Contents

6-2CHAPTER 6: T ROUBLESHOOTINGNo operation.Verify the access point configuration.Review access point firmware revisions and updatefirmware if necessary.Make sure that there are no duplicate IP addresses onthe network. Unplug the access point and ping theassigned address to make sure that no other deviceresponds to that address.Access point powers up, butdoes not associate withwireless clients.Confirm that the service area on the access pointmatches that on the clients.Verify that the clients are operating correctly.Make sure that security settings on the access pointmatch those 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 inthe ESS in which mobile users can roam are configuredto the same WEP setting, SSID, and authenticationsettings.Slow or erratic performance.Try changing the wireless channel on the access point.Check the access point antennas, connectors, andcabling for loose 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 devicesacross routers. Make sure that the computer isconnected on the same segment as the access point.After you specify an IPaddress for an access point,the 3Com Device Managercontinues to point to the oldIP address when you selectthe access point in theWireless Network Tree.In the 3Com Device Manager window click the Refreshbutton to refresh the Wireless Network Tree. Then clickthe access point in the Wireless Network Tree and clickProperties. The IP address you specified is now listed. Ifyou want to continue configuring the access point,click Configure.Symptom Solutions