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Spanning Tree enables rapid spanning tree protocol ( RSTP) or the older, regular spanning tree protocol ( STP) on your UniFi switches.
AP Exclusions is a list of APs that are excluded from the global rules. You can hit the “X” on the right to apply the global rules, or go to their device settings panel and toggle the global rules there. Note: Fast BSS Transition works with both pre-shared key (PSK) and 802.1X authentication methods. Older devices should not experience connectivity issues with this enabled.Required: APs will use PMF for all stations. Stations without PMF capability will not be able to join the WLAN. Broadly speaking, higher transmit power means longer range, higher signal-to-noise, and higher throughput. Higher power levels can also increase co-channel or adjacent-channel interference, so it is a balancing act.
Effect: Enabling this might improve performance with smart home products such as smart speakers or streaming devices. Recommendation: Enable if needed, especially on guest networks, networks with limited Internet bandwidth, or with high client density. Designed for Optimal RF Performance - The newly redesigned UniFi Controller optimises RF performance:
Enhanced Security and Network Isolation
Multicast Enhancement (IGMPv3) is on under Wi-Fi settings → multicast management. This allows multicast traffic to be converted to normal unicast traffic when possible. Enabling wireless meshing limits all UniFi APs to 4 SSIDs per band. This is due to the fact that wireless meshing adds a hidden SSID for other APs to connect to. User Group is now called bandwidth profile, for restricting maximum bandwidth for connected client devices Note: A new feature added in version 7 is a warning, letting you know applying these changes is going to disrupt users that are currently connected. That’s why you might see a little triangle with an exclamation mark on the “Add New Wi-Fi Network” button in the bottom right. Recommendation: Auto is a good default, but usually results in maximum power. If setting manually, use the lowest power level that still results in good coverage and signal strength. Keep 2.4 GHz around 6 dBm lower than 5 GHz or 6 GHz in multi-AP networks if you want to keep their coverage area roughly the same.
Recommendation: Turn on if battery life is important, and older/IoT device connectivity is not. Disabling this is a good troubleshooting step if you have performance or connectivity issues. Enabling IGMP Snooping can improve performance on networks that have streaming or smart home devices on them. On a guest network or a network without the need for it, IGMP snooping can be disabled. Effect: Enabling band steering encourages client devices to use 5 or 6 GHz, and not connect to the slower 2.4 GHz network unless they have to. This has caused connectivity issues in the past, but recently the feature was reworked to be less restrictive and should cause less issues with IoT or older 2.4 GHz-only clients.Recommendation: Leave enabled, unless you have connectivity or roaming issues. As a normal troubleshooting step, disabling band steering is a good thing to try. It’s possible that band steering causes issues for your devices on your network, even though it doesn’t cause issues on mine. IGMP Snooping allows a layer 3 UniFi device to query for multicast clients, and only send multicast traffic to the clients that should receive it. One UniFied Network - Option to create one large wireless network across multiple APs that lets users move around the network wirelessly. Recommendation: Enable if Multicast performance is an issue, and latency and non-registered traffic are not important.
GHz and 6 GHz signals attenuate more rapidly and are more affected by obstructions, resulting in around half the range of 2.4 GHz. If you have a very dense area or multiple APs, setting a unique channel and keeping 5 GHz TX power on low or medium may be best. For those trying to achieve the most range and coverage from the APs they have, high 5 GHz and 6 GHz TX power can be set. Powerful Hardware- Features the latest in WiFi 802.11AC MIMO technology with WiFi speeds up to 1750Mbps (450Mbps + 1300Mbps)This is another setting that relates to multicast traffic, typically coming from streaming or smart home devices such as AirPlay or Chromecast. It trades latency and support for non-registered multicast traffic for a reduction in bandwidth usage. Please Note: The UAP-PRO is no longer available. For an alternative, we recommend the UAP-AC-PRO . Ubiquiti UniFi Pro Access Point (UAP-Pro) Effect: Enables OTA (over-the-air) Fast BSS Transition, which allows devices that support it to roam between APs faster. Without this setting enabled, roaming from AP to AP may take a few seconds, and during that time data cannot be sent or received. In most cases you won’t notice this, but latency-sensitive and real-time applications like a voice call can perform poorly. Slow roaming with a VoIP call may result in gaps in the audio. With 802.11r fast roaming enabled, the roams should be nearly unnoticeable. IGMP Proxy and IPTV Support allows you to proxy multicast traffic across networks, setting a source network and networks that are allowed to receive it. Airtime Fairness: Minimises problem-client effects on system performance by limiting their airtime access
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