--> Coverage holes are the areas where users can't receive the signal from wireless access points.
--> If the users on the Access Point are found at low Received Signal Strength Indicator (RSSI) levels, Cisco Acess Point sends coverage hole alarm to the Cisco Wireless Controller / Prime Infrastructure.
--> Radio Resource Management Coverage Hole Detection Algorithm is used to find out Coverage holes in the wireless network.
--> Coverage holes helps us to know where to deploy one more access point in the wireless network.
--> If the users on lightweight access point are detected at threshold levels lower than Radio Resource Management Algorithm then Access Point sends coverage hole alert to the controller.
--> The alert contains the area where users are experiencing poor signal coverage in the wireless network.
--> The more number of coverage holes in the wireless network causes issues in the seamless roaming.
--> The controller uses the quality of client signal levels reported by the AP to determine if the power level of that AP needs to be increased.
--> Coverage hole detection is controller independent, so the RF group leader is not involved in those calculations.
--> The controller knows how many clients are associated with a particular AP and what the signal-to-noise ratio (SNR) values are for each client.
--> If a client SNR drops below the configured threshold value on the controller, the AP increases its power level to try to compensate for the client.
--> By default Coverage Hole Detection is enabled. You can change the settings in “Wireless -> 802.11a or 802.11b -> RRM -> Coverage” section.
--> We can enable/disable for a given WLAN as well. Under WLAN advanced settings you can see an option to enable or disable Coverage Hole Detection.
--> If the users on the Access Point are found at low Received Signal Strength Indicator (RSSI) levels, Cisco Acess Point sends coverage hole alarm to the Cisco Wireless Controller / Prime Infrastructure.
--> Radio Resource Management Coverage Hole Detection Algorithm is used to find out Coverage holes in the wireless network.
--> Coverage holes helps us to know where to deploy one more access point in the wireless network.
--> If the users on lightweight access point are detected at threshold levels lower than Radio Resource Management Algorithm then Access Point sends coverage hole alert to the controller.
--> The alert contains the area where users are experiencing poor signal coverage in the wireless network.
--> The more number of coverage holes in the wireless network causes issues in the seamless roaming.
--> The controller uses the quality of client signal levels reported by the AP to determine if the power level of that AP needs to be increased.
--> Coverage hole detection is controller independent, so the RF group leader is not involved in those calculations.
--> The controller knows how many clients are associated with a particular AP and what the signal-to-noise ratio (SNR) values are for each client.
--> If a client SNR drops below the configured threshold value on the controller, the AP increases its power level to try to compensate for the client.
--> By default Coverage Hole Detection is enabled. You can change the settings in “Wireless -> 802.11a or 802.11b -> RRM -> Coverage” section.
--> We can enable/disable for a given WLAN as well. Under WLAN advanced settings you can see an option to enable or disable Coverage Hole Detection.
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