3Com 9150, 9550 manual Solution s

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Diagnosing Problems

65

4Make sure the subnet address matches that of the computer.

Symptom

Two Access Points cannot communicate in ad-hoc mode.

Solution

Adjust the positions of the Access Points to improve reception.

To ensure correct operation in ad-hoc mode, the settings on the two Access Points must match exactly.

Launch the Access Point Configuration Management System and make sure that the Wireless LAN Service Area, channel selections, Data Preamble setting, and security setting are the same on both Access points.

Symptom

You are running Windows NT. After you connect the Access Point, your computer cannot obtain a valid IP address.

Solution (s)

The Access Point configuration settings may not be compatible with the network. If they are not, and your Windows NT computer is set up to obtain its IP address from a DHCP server, the Access Point is unable to associate with the network to obtain the IP address.

To work around this, set a static IP address on your computer. Then set the Access Point configuration to match the network. When the Access Point is able to associate, reset your computer to obtain its IP address from the DHCP server. If the Access Point

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Contents 3Com AirConnect 9550 11n 2.4+5GHz PoE Access Point Page 3Com Corporation 350 Campus Drive Marlborough, MA Environmental Statement Introduction Ssid Bssid Iapp Troubleshooting Antennas Used per Mode Console Cable Pin-out Page Security Key Product FeaturesManageability Performance and Reliability802.11a Wireless Network Standards802.11b/g Ieee 802.3af Installing Your 3com Wireless Access Point Networks with a Dhcp Server Access PointNetworks without a Dhcp Server 3Com Wireless Wireless Infrastructure Device Manager Launching the 3Com Wireless Infrastructure Device Manager3Com Wireless Infrastructure Device Manager Click on the Properties button to see the following screen Logon Screen System Status First Time OnlySystem Summary System Summary Wireless Station List Wireless Station ListEvent Log List Event Log ListSetup Wizard System Configuration4G Radio Wireless Network WEP System Properties 4G Wireless Security SettingsWireless Bridge Mode Access Point modeIP Settings Wireless Network Wireless NetworkWireless Mode Standard ChannelCurrent Profiles Ssid Profile Settings Station Separation Suppressed SsidWEP SecurityWPA Only WPA2-Only WDS Link Settings WPA2-MixedProfile Ssid Isolation System Configuration WEP WPA-PSK Tkip WPA-PSK AES WDS Security SettingsWireless Advanced Settings Transmit PowerBeacon Interval Association TimeoutData Beacon Rate Fragment LengthDistance 802.11d supportAntenna Type Aggregation SupportQoS Management Vlan Service802.11F Iapp Support Choose either Enable or DisableClick Add Ack-Policy Setting DescriptionDefault value table Sntp Following settings can be configured System Log Syslog FunctionSyslog Server Syslog PortSyslog Level Management AdministrationSnmp MAC Filtering Access Control ListRogue AP Detection Rogue AP DetectionBackup/Restore Settings Backup/ Restore SettingsFirmware Auto Upgrade Firmware Auto UpgradeFirmware Upgrade Firmware Manual UpgradeResult Reboot RebootingConnecting Through the Com Port Reset Hole Location Restoring Factory SettingsDiagnosing Problems TroubleshootingSymptom Solution s Disconnecting the Access Point Upgrading Access Point Firmware Telephone Technical Support and Repair 3COM ProductTelephone Technical Support and Repair END-USER License Agreement Telephone Technical Support and Repair Appendix Antennas Used per ModeMode Antennas Used Console Cable Pin-out RJ45 to D-SUB 9 pin cable Console Cable Pin-out Numerics IndexSsid WPA