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End device choose 2.4G or 5G

zshowip
Enthusiast
Enthusiast

Hi We have C9800 WLC. If we just setup ssid like ABC, we can see the ssid via end device. I would like to know if this ssid ABC is 2.4G, 5g or both? How can end device choose 2.4G or 5G depends end device NIC configuration? or something else? Thank you 

6 Replies 6

Prince.Owusu
Beginner
Beginner

Hello,
By default when you set up an SSID on the 9800 , assuming 2.4 and 5ghz are both enabled globally for the Ap , the SSID by default supports all radios, you should see this when you click on the WLAN config on the general page in the "radio policy" section . You can change the radio to only be 5GHz for example by setting it to "802.11a" or whatever you would like it to be depending on your business use case

As far as client NIC config , most clients natively prefer 2.4 initially. However , if they support both 2.4 and 5GHz, they can roam to a 5GHz radio if that is available on the AP.

Hope this helps ! 

zshowip
Enthusiast
Enthusiast

Thanks for your reply. we have a lot APs on the same ceiling. 2.4G weakness is to be easily interfered by each other. Under one WLC 9800, it might be a good way if we choose some APs emit 2.4G only and other APs emit 5G only? 

 

                  >.... if we choose some APs emit 2.4G only and other APs emit 5G only? 

  - I would strongly advice against that taking  into account  clients that can only do 2.4Ghz (e.g.), also while 2.4Ghz has more 'contenders' is passes easily through obstructions.  All of that being somewhat 'fluid arguments' , the best solution for best coverage is to have site survey done. Your action will introduce all sorts of roaming problems too , take care!

 M.

 M.

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend