Configure an SSID for only one band when possible. Typically, each wireless band for a network would have a unique SSID for each band (2.4ghz and 5ghz).
Description:
Service Set Identifier or “SSID” is the name of the wireless network. SSID allows users or devices to connect to the desired network when multiple independent networks operate in the same physical area. Frequency bands are ranges of radio wave frequencies used to transmit data in the wireless spectrum, and can further be broken down into WiFi channels. (The higher the frequency, the faster the data transmission and shorter the signal range.)
Investigation:
Filter SSIDs and then check to see if multiple bands are using the same SSID.
Mitigation:
Business / Enterprise Networks
It is recommended to configure an SSID for only one band when possible. Typically, each wireless band for a network would have a unique SSID for each band (2.4ghz and 5ghz). For example, one network may have the SSID of “Wireless” for the 2.4ghz band and “Wireless-5G” for the 5ghz band.
Apple Recommendations for Home Networks
The Wi-Fi network name, or SSID (service set identifier), is the name your network uses to advertise its presence to other devices. It's also the name that nearby users see on their device's list of available networks.
Use a name that's unique to your network, and make sure that all routers on your network use the same name for every band they support.
Don't use common names or default names such as linksys, netgear, dlink, wireless, or 2wire.
Don't give your 2.4GHz, 5GHz, or 6GHz bands different names. All bands should have the same name.
If you don't follow this guidance, devices might not connect reliably to your network, to all routers on your network, or to all available bands of your routers. And devices that join your network are more likely to encounter other networks that have the same name, and then automatically try to connect to them.
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