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sfn-roam roam-check high-threshold
Function
The sfn-roam roam-check high-threshold command sets the upper RSSI threshold for agile distributed SFN roaming.
The undo sfn-roam roam-check high-threshold command restores the default upper RSSI threshold for agile distributed SFN roaming.
By default, the upper RSSI threshold for agile distributed SFN roaming is -55 dBm.
Format
sfn-roam roam-check high-threshold high-threshold-value
undo sfn-roam roam-check high-threshold
Usage Guidelines
Usage Scenario
You can set the STA
RSSI threshold to control the sensitivity of agile distributed SFN
roaming and prevent STAs from frequently roaming at radio borders
of RUs. A roaming switchover occurs when the total number of records
in the following conditions exceeds the value specified by the sfn-roam roam-check
better-times command:
- When the HAP detects that the STA RSSI is lower than the lower threshold: The central AP makes a record if the SNR of the FAP is higher than that of the HAP.
- When the HAP detects that the STA RSSI is between the upper and lower thresholds: The central AP makes a record if the SNR of the FAP is 3 dB higher than that of the HAP.
- When the HAP detects that the STA RSSI is higher than the upper threshold: The central AP makes a record if the SNR of the FAP is 5 dB higher than that of the HAP.
Precautions
The lower RSSI threshold for agile distributed SFN roaming must be no higher than the upper threshold.
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