User Guide

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UniFi Controller User Guide
Ubiquiti Networks, Inc.
Chapter 12: UniFi Access Point Details
If the 2.4 GHz band is overloaded, and the RSSI of the
client is above the threshold for association on the 5 GHz
band, then the AP will steer the client to the 5 GHz band
by withholding probe responses.
If the client still attempts to associate on the 2.4 GHz band,
the AP will send auth failure frames in response to auth
requests from the client.
If the 5 GHz band is overloaded and the 2.4 GHz band is
not, then clients are steered to the 2.4 GHz band (RSSI is
not a factor). The RSSI thresholds are 30 dBm or better for
the 5GHz band. For example, if the 2.4 GHz network has
low utilization, then the Steer to 5G option does not steer
all clients to 5 GHz.
All APs must use the same SSID for the 2.4 GHz and 5 GHz
bands. For example, if you have multiple WLANs in your
default WLAN group, you cannot override the 5 GHz SSID
name in one of the WLANs and still use band steering on
the other two WLANs. All APs must use band steering – or
none of them do.
• Steer to 5G Select this option to steer clients to the
5GHz band at a lower channel utilization threshold
than the Balanced option. The threshold is not a single
value; instead it is a function of two values: the 2.4 GHz
channel utilization and 5 GHz channel utilization.
• Balanced (Not available for the UAP-PRO.) Select this
option to steer clients to the 5 GHz band channel at a
higher channel utilization threshold than the Steer to 5G
option.
• Off Keep the default, Off, if you do not want to use
band steering.
Wireless Uplinks
When an AP is not connected by a wire, the Wireless
Uplinks section lists potential uplink APs that can be
selected to establish a wireless connection.
AP Displays the hostname, alias, or MAC address of
the potential Uplink AP. You can click the name to get
additional details.
Channel Displays the channel in use for wireless
communication.
Signal Displays the percentage of signal strength.
Actions Click a button to perform the desired action:
• Select Click Select to connect the wireless AP to the
wired AP.
• Remove Click Remove to disconnect the wireless AP
from the wired AP.
Note: An AP can only uplink to another AP using the
same radio band. For example, the UAP-Outdoor 5G
can only uplink to another UniFi AP using the 5GHz
radio band.