Configuring with Web Based Management
6.6 "Interfaces" menu
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 08/2018, C79000-G8976-C267-13
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Background Scan Mode
While the client is connected to an access point, it scans for other access points in the
background with which it can connect when necessary. Specify the mode for the scan.
The following options are available:
–
Always
If the background scan threshold is undershot, the client searches continuously for
access points.
–
Idle
If there is no data transfer for a certain time, a scan is started for further access points.
–
Disabled
As long as the client is connected, there is no scan for further access points.
–
Current channel
The client updates its scan list based on the beacons (management frames) that it has
received on the current channel. The scan list is evaluated within the background scan
interval. If beacons from a better access point are included, the client switches to that
access point after evaluation without changing the current channel.
Note
iPRP enabled
When iPRP is enabled, the client sends special roaming advertisement frames to its
redundant partner for each roaming operation. The redundant partner may not perform
roaming itself for 500 ms after receiving this.
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Background Scan Interval [ms]
Specify the interval at which further access points are scanned.
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Background Scan Threshold [dBm]
Specify the threshold. If the threshold is undershot, the client searches for further access
points.
Table 2 has the following columns:
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Radio
Shows the WLAN interface.
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Scan Channels
Shows the channels on which the client searches for an access point. The display
depends on the wireless approvals of the selected country and the settings for "Allowed
Channels".
Table 3 has the following columns:
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Radio
Shows the WLAN interface.
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Enabled
Enables or disables the relevant SSID.
