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Siemens CP 1515 User Manual

Page 137

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Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01

137

All other stations will defer their transmissions for the duration of the
“radio-silence time” identified in the CTS message.

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1.

Start the RLM Manager program, select the Radio Link Module that
services the wireless cell where you suspect poor performance caused
by a hidden station problem and click the

(GLW

button.

2. Select the

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tab.

3. Choose the socket that contains the network interface that suffers from

a hidden station.

4. Click the

$GYDQFHG

button.

5. Click the

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check box.

6. In the

7KUHVKROG

field, enter a value in the range of 0 to 2347.

By default, the RTS/CTS medium reservation threshold is 2347 (disabled)
which means that RTS/CTS will not be used.

In a network using RTS/CTS medium reservation, a typical setting
for the medium reservation threshold is 500.

Alternatively enter a value of your choice.

The value you enter here will determine when the Access Point RLM will
issue a Request to Send (RTS). For example, if the value you select is
500:

The RLM will send the RTS/CTS protocol for each message that
exceeds the length of 500.

Messages with a length that is shorter than 500, will be transmitted
according to the standard CSMA/CA protocol.