Communication Issues - Proxim Tsunami MP-8100 Series Installation And Management Manual

8.2.3 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)
8.2.4 Cannot Use the Web Interface
1. Open a command prompt window and enter ping <ip address unit> (for example ping 10.0.0.1). If the unit does not
respond, make sure that you have the correct IP address. If the unit responds, the Ethernet connection is working
properly, continue with this procedure.
2. Ensure that you are using Microsoft Internet Explorer 5.0 or later (version 6.0 or later recommended) or Netscape 6.0
or later.
3. Ensure that you are not using a proxy server for the connection with your Web browser.
4. Ensure that you have not exceeded the maximum number of Web Interface or CLI sessions.
5. Double-check the physical network connections. Use a well-known unit to ensure the network connection is properly
functioning.
6. Perform network infrastructure troubleshooting (check switches, routers, and so on).
NOTE: At any point of time, if your device is unable to connect to your network, power reset your device by
unplugging and plugging PoE

8.3 Communication Issues

8.3.1 Two Units Are Unable to Communicate Wirelessly
If a wireless link cannot be established after testing the two units within close distance of each other, then there can be two
reasons why wireless connectivity is not possible while the MP-8100 devices are at their desired locations:
There may be a problem in the RF path, for example, a bad connector attachment (this is the most common problem in
installations) or a bad cable (water ingress).
NOTE: The cables can be swapped with known good ones as a temporary solution to verify cable quality.
Another reason may be related to an interference problem caused by a high signal level from another radio. This can be
checked by changing the frequency channel and then verifying whether another channel works better or by changing the
polarization as a way of avoiding the interfering signal. To know in advance how much interference is present in a given
environment, a Spectrum Analyzer can be attached to a (temporary) antenna for measuring the signal levels on all available
channels.
NOTE: The antennas are usually not the problem, unless mounted upside down causing the drain hole to be quickly
filled with radome.
Tsunami MP-8100 Installation and Management Guide
Troubleshooting
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