cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
340
Views
3
Helpful
6
Replies

Prevent client connect to 802.11a

hs08
Spotlight
Spotlight

Hello,

can we make wireless 5Ghz only operate on 802.11n/ac/ax only, mean disable 802.11a?

6 Replies 6

marce1000
VIP
VIP

 

 - FYI : https://www.cisco.com/en/US/docs/wireless/controller/7.4/configuration/guides/system_management/config_system_management_chapter_0100.html#ID1188

 M.



-- ' 'Good body every evening' ' this sentence was once spotted on a logo at the entrance of a Weight Watchers Club !

Hello,

I believe the reference article is to disable 802.11a, my question is disable 802.11a but allowing client connect to 802.11an/ac/ax

 


@hs08 wrote:
my question is disable 802.11a but allowing client connect to 802.11an/ac/ax

What is the "business case" for this idea?

JPavonM
VIP
VIP

Disabling 802.11a is not possible as it is for 802.11 and 802.11b due to the fact that it shares same physical data rates and band that n/ac/ax.

How can an AP detect that a device is 802.11a capable only? That could be only done by detecting single spatial stream clients only BUT the problem is that even modern devices use 1SS under certain situations, so that spec cannot be use it to detect them. I can't imagine how to do it without causing serious disruption even in 802.11n/aac/ax capable devices.

 

Hello

 If I were assigned to a task like that, what I would do is enable 40Mhz channel for my SSIDs.

If you look into the 802.11a and 802.11n standard, they are very similar and the only difference is that 802.11n supports channel bonding of 40Mhz but 802.11a does not.

You can not filter based on the data rates or the frequency, as they are the same

 

But even n/ac/ax can fall-back to 20MHz channels in specific circumstances so that still isn't a fool proof method.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: