User guide

Troubleshooting AP-800 User Guide
Symptoms and Solutions
122
Symptoms and Solutions
Connectivity Issues
Connectivity issues include any problem that prevents you from powering up or connecting to the AP.
AP Unit Will Not Boot - No LED Activity
1. Make sure your power source is operating.
2. Make sure all cables are connected to the AP correctly.
3. If you are using Gigabit Ethernet PoE, make sure you are using a Category 5/Category 6, foiled, twisted pair cable to
power the AP.
Serial Link Does Not Work
1. Make sure you are using a standard, straight-through, 9-pin serial cable.
2. Double-check the physical network connections.
3. Make sure your PC terminal program (such as HyperTerminal) is active and configured to the following values:
– Com Port: (COM1, COM2, etc. depending on your computer);
– Baud rate: 115200; Data bits: 8; Stop bits: 1; Flow Control: None; Parity: None;
– Line Feeds with Carriage Returns
(In HyperTerminal select: File > Properties > Settings > ASCII Setup > Send Line Ends with Line Feeds)
Ethernet Link Does Not Work
1. Double-check the physical network connections. Use a known-good unit to make sure the network connection is
present. Once you have the AP IP address, you can use the “Ping” command over Ethernet to test the IP Address. If
the AP responds to the Ping, then the Ethernet Interface is working properly.
2. By default, the Access Point will attempt to automatically detect the Ethernet settings. However, if you are having
problems with the Ethernet link, manually configure the Access Point’s Ethernet settings. For example, if your switch
operates at 100 Mbits/sec/Full Duplex, manually configure the Access Point to use these settings. If you cannot
access the unit over Ethernet, then use the CLI interface over the serial port to configure the Ethernet port (see Using
CLI to Manage the Access Point .
Basic Software Setup and Configuration Problems
Lost AP, Telnet, or SNMP Password
1. Perform the Soft Reset to Factory Defaults in this guide. This procedure resets system and network parameters, but
does not affect the AP Image. The default AP HTTP, Telnet, and SNMP usernames are “admin” and passwords are
“public”.
Client Computer Cannot Connect
1. Client computers should have the same Network Name and security settings as the AP.
2. Network Names should be allocated and maintained by the Network Administrator.
3. See the documentation that came with your client card for additional troubleshooting suggestions.
AP Has Incorrect IP Address
1. Default IP Address Assignment mode is static. If you do not have a DHCP server on your network, the default IP
Address is 169.254.128.132. If you have more than one unintialized AP connected to the network, they will all have
the same default IP address and you will not be able to communicate with them (due to an IP address conflict). In this
case, assign each AP a static IP address via the serial cable or turn off all units but one and change the IP address
using ScanTool one at a time.