There are many factors that can affect the a client's RSSI at the AP side including distance, building materials, objects, interference, etc.
Remember, you need to granularly select the appropriate value for each AP and avoid using a single value everywhere. You will notice that this is a negative number because the power is less than 1 mW:Ī value close to 0 indicates high signal quality, whereas a larger negative value indicates poor signal quality. The signal is measured in units of dbm ( decibels per milliwatt). You can view the Signal Strength for your current wireless clients by clicking on a device in the Client Devices tab. Minimum RSSI is can be enabled within the UniFi Network Application by selecting an AP in UniFi Devices and then navigating to Settings in the side-panel of the selected device. Once enabled, this can be manually set for your 2G and 5G radios independently. How to determine and configure Minimum RSSI For this reason, it is important to realize that there is no one size fits all and you should carefully test your configuration to avoid introducing connectivity problems. Improper tuning can thus result in network instability. Since the signal strength still does not meet the Minimum RSSI, it will again be booted. It may connect back to the same AP, especially if it is the only one within range. Once an AP kicks a client (by sending a de-authentication packet), it is up to the client to find a better AP to connect to. Once the signal drops below the Minimum RSSI value set, the initial AP will kick the client so that it can reconnect to the new AP. It prevents a device getting "stuck" connected to the initial AP at a weaker signal strength as opposed to roaming to a new AP that may be more optimal.
The main purpose of this is to assist with a client's roaming between two nearby APs. The Minimum RSSI value is set individually on each AP and indicates the minimum signal level required for a client to remain connected. Received Signal Strength Indication (RSSI) is a value indicating the perceived signal level of a wireless client from the AP's perspective.
How to determine and configure Minimum RSSI.We only recommend using this if you are familiar with basic RF theory as misconfiguration may result in performance degradation of your network. This article explains what Minimum RSSI is and how to configure it in the UniFi Network application.
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