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Effect: Enabling this might improve performance with smart home products such as smart speakers or streaming devices. For 160 MHz channels in 5 GHz, you need to utilize DFS space. There are three non-overlapping channels available: Effect: Higher numbers buffer longer, potentially saving battery life. Altering these values can cause a variety of issues though, so change them at your own risk. DTIM stands for Delivery Traffic Indication Message, which is a message that is sent along with beacon frames. The role of the DTIM is to let a sleeping client know that it has buffered data waiting for it. Effect: Enabling allows devices that support UAPSD to save battery power by keeping their Wi-Fi radio in sleep mode for more time. Like a lot of features that are off by default, this can cause issues for some clients, especially older or IoT devices.
New Device Auto-Link allows wireless UniFi Protect cameras and IoT devices to be automatically visible for adoption. This setting used to enable a hidden “Element-xxxxxx” SSID, but it is now enables a hidden SSID with no name. This makes it easier to setup those devices, but can be disabled if you don’t need it. Recommendation: Enable if Multicast performance is an issue, and latency and non-registered traffic are not important.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. 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. Airtime Fairness: Minimises problem-client effects on system performance by limiting their airtime access Minimum RSSI is a concept where clients will be dropped from the AP once they reach a certain threshold. This should keep clients from associating to the AP in the basement when they are on the 2nd floor, and situations like that. A good general RSSI to shoot for is around -70 dBm, but you may want to raise or lower that depending on your noise floor, network layout, and what you are trying to achieve. Wi-Fi Speed Limit allows you to restrict the amount of bandwidth available for clients connected to the network.
The default channel width is 40 MHz, and that’s a good default. There are 4 non-overlapping 40 MHz channels, and more if you consider going into DFS space. Wider channels like 80 or 160 MHz deliver more throughput, but also have more noise and interference, worse range, and are less widely supported. A 20 MHz channel is the foundation — anything more requires channel bonding and a bit of comprise. 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) Client device isolation prevents clients on the same AP from communicating with each other. Together with network isolation, guest hotspot portal settings, and traffic rules, it can prevent clients from reaching other clients or other networks. IPv6 Support globally enables IPv6 support on your networks, and allows for a toggle on networks to set IPv4 and IPv6 separately. By default, UniFi has one LAN network, 192.168.1.0/24, which is used for all wired and wireless connections. Creating additional virtual networks ( VLANs) allows you to segment and restrict traffic. This is commonly used for guest or IoT devices, or separating devices or areas into different network groups. Before diving into wireless settings, setup your networks and VLANs first. This can be done by modifying the default LAN, or by creating a new network under the Networks tab.
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Powerful Hardware- Features the latest in WiFi 802.11AC MIMO technology with WiFi speeds up to 1750Mbps (450Mbps + 1300Mbps) These settings used to be part of the global AP rules, but have migrated to Settings -> System -> Advanced . 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. L3 Manageability - With L3 manageability, the UniFi Controller software can be run on a different subnet than the UniFi APs it manages, allowing 'no-touch' AP provisioning Multicast Enhancement (IGMPv3) is on under Wi-Fi settings → multicast management. This allows multicast traffic to be converted to normal unicast traffic when possible.
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. 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.Designed for Optimal RF Performance - The newly redesigned UniFi Controller optimises RF performance:
Power Method:- Passive Power over Ethernet (48V)- 802.3af/802.3at Supported (Supported Voltage Range: 44 to 57VDC) This setting controls how often an AP changes the GTK, or Group Temporal Key. The GTK is a cryptographic key that is used to encrypt all broadcast and multicast traffic between APs and clients. Band steering can be set to off, prefer 5 GHz, and balanced. With off, the AP doesn’t do anytime to encourage clients to join 5 GHz, and clients may prefer to join the 2.4 GHz radio due to it having longer range and a higher RSSI. Those clients may be closer to another AP and a stronger 5 GHz radio, but a lot of times the Wi-Fi client device will stay connected to the 2.4 GHz radio. Setting band steering to prefer 5 GHz can sometimes help with that. It can also cause issues with some IoT or 2.4 GHz-only devices, so balanced is sometimes a safer choice. This is one more knob to turn when you’re having issues with roaming. IP Settings and MiscellaneousGHz is largely the same as 5 GHz, but there is no DFS. For low-power indoor APs like the U6-Enterprise or U6-Enterprise-In-Wall, there is no AFC requirement either. Power limits are set with a constant spectral density rather than a constant EIRP. What that means in practice is that there is no noise penalty for doubling a channel width in 6 GHz. With each +3 dB (doubling) of noise, the EIRP doubles as well. That means that 80, 160, and eventually 320 MHz width channels, 6 GHz is the best place for them. This setting enables BSS Transition with WNM, which stands for Wireless Network Management. WNM allows the AP to send messages to clients to give them information about the network, and details of other APs they can roam to. This includes the current utilization and number of clients, allowing the client to make more informed roaming decisions. This setting controls whether mDNS is enabled on the wired network, and any wireless networks that rely on it. Multicast DNS is mostly used to discover devices like a Chromecast or printer. If you have AirPlay, Chromecast, Sonos, Bonjour, or similar devices and you want to be able to discover them on other networks, Multicast DNS should be enabled.
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