Software Guide

Advanced Configuration
Tsunami
®
800 & 8000 Series - Software Management Guide 118
After configuring the roaming parameters, click OK and then COMMIT.
To view the data rates and their corresponding minimum required SNR values to sustain an optimum link quality, click Click
here to view the Local SNR-Table. See
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The Slow Roaming thresholds should be higher than the Fast Roaming thresholds, otherwise the Slow Roaming
procedure will never be started. Switching from Slow to Fast, and from Fast to Emergency Roaming is possible but
vice versa is not.
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In the roaming deployments, it is recommended to configure the same Announce Period in all the BSUs.
·
While working on DFS channels, the roaming time increases and affects the performance as the device scans the
channel for the presence of the RADAR for the duration of the configured Channel Wait Time.
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In VLAN aware scenarios, it is recommended not to use Roaming.
Roaming Link Profile This parameter enables you to configure a roaming link profile for the roaming enabled
BSU.
When roaming is enabled on the SU, select a profile from the configured link profiles,
which serves as the roaming profile. The Default profile serves as the roaming profile when
no profile is selected. The configured roaming profile is mapped to the roaming enabled
BSU. For the BSU with roaming disabled, the profile configured in the BSU Profiles list will
be used.
When roaming is disabled on the SU, the BSU is mapped to the corresponding profile from
the BSU Profiles list.
Slow Rx SNR Threshold When the calculated Rx SNR, for the current link, goes lower than or equal to the
configured Rx Slow Roaming SNR Threshold, then SU starts Slow Roaming.
The default threshold value is set to 0. To configure, enter a desired threshold value
ranging from 0 - 127.
Fast Rx SNR Threshold When the calculated Rx SNR, for the current link, goes lower than or equal to the
configured Rx Fast Roaming SNR Threshold, then SU starts Fast Roaming.
The default threshold value is set to 0. To configure, enter a desired threshold value
ranging from 0 - 127.
SNR Toggle Offset SNR Toggle Offset parameter is used to avoid frequent roaming (ping pong effect), in
situations where the current BSU’s Rx SNR and new BSU’s Rx SNR are very close.
If (Current BSU Rx SNR value + SNR Toggle offset) < (New BSU Rx SNR) then
SU shifts to the new BSU.
else,
Continues with the same BSU.
To configure, enter a desired offset value ranging from 0 - 10.
Parameter Description