Interactive Set-Up
AX3000 Models 90 - User's Manual 45
Forced BSSID: in event of multiple access points with the same SSID, this
option allows a specific one to be selected via its MAC address (BSSID).
Roaming: this feature is only for 'mobile' thin clients. When a thin client moves
from its current access point (and the signal quality becomes too weak), the thin
client automatically disconnects its wireless link and attempts to reconnect to
the nearest access point (with the same SSID and same security settings). This
should be 'invisible' for TCP connections (telnet, RDP, ICA...).The roaming
options are:
- RSSI Threshold before Roaming: if the signal quality average is below
this value the wireless link is disconnected.
- The three new parameters are used to compute this signal quality
average. For more information see the flow chart on the next page.
- Scan all Channels: after a roaming disconnection, available access
points are detected by a scanning operation. Scanning all channels takes
3 or 4 seconds (200ms per channel). To reduce this time and to be
quickly reconnected, a subset of channels can be specified. Set this
parameter to "No" and select/unselect each channel.
Note for Windows servers: to prevent TCP disconnections (RDP or ICA) when
roaming, a registry value can be tuned:
- Parameter: HKEY_LOCAL_MACHINE-SYSTEM-CurrentControlSet-
Services-Tcpip-parameters-TcpMaxDataRetransmissions
- Default value: 5
- Advised value: 20
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