Alarm settings

Details for the alarms sent over the logical interface in LANconfig are set under Wireless LAN > General > Logical WLAN settings > Alarms.

Typical situations that cause problems in the wireless LAN environment include a decrease in signal strength below a certain threshold, the percentage of lost packets exceeding a certain threshold, or packets frequently having to be resent—all of which can greatly reduce the available bandwidth.

In order to recognize and react to these situations, LANCOM WLAN devices now issue alerts to provide information on the over- or undershooting of threshold values.

Note: A connection is not absolutely rated as poor. The assessment always depends on the parameters that are specified. It should be noted that threshold limits that are too high or too low can lead to incorrect evaluation, and that a very large number of false alerts could be the result. A certain amount of packet loss and fluctuating signal strengths are to be expected even for stable wireless connections.

Here you can set the limit values for the individual SSIDs. Threshold values can also be set for point-to-point links (WLAN bridges) operated by an AP. These limits are used to evaluate a client's connection to the SSID and the connection to a P2P remote.

Signal strength: The parameter specifies the minimum of the required signal strength in percent. The alarm is triggered when the signal strength falls below the configured value. An alarm limit must be between 1 and 100. The value 0 switches the alarm off.
Note: In the case of client and P2P links, separate values are evaluated for beacon and data signal strength. If available, the beacon signal is preferred for comparison because the values are up-to-date, even though there is currently no traffic on the connection.
Total retries: This parameter specifies the maximum limit of the retry rate per mille. The alarm is triggered when the ratio of total retries and Tx packets reaches the configured value. An alarm limit must be between 1 and 1000. The value 0 switches the alarm off.
Tx-Errors: This parameter specifies the maximum limit of the transmit error rate per mille. The alarm is triggered when the ratio of Tx errors and Tx packets reaches the configured value. An alarm limit must be between 1 and 1000. The value 0 switches the alarm off.