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New Member

Querying a wireless access point for nearby clients


Is it possible to query a wireless access for the list of clients it can "see" ?

I'm looking for a list of MAC addresses (or some ID) and the signal strength.

Can you suggest an access point that can support this?
Ideally I would like to perform this query remotely.

It's easy enough to have a client list the access points it can see, but is it possible for the access point to do the same?

Thank you very much in advance.

Everyone's tags (2)
Cisco Employee

Re: Querying a wireless access point for nearby clients


From the post what i can understand is.. you want the AP to start the initiation rather than Clients.. in that case, its not possible from my point of view..

because, 802.11 steps are..

Clinet >>>>>>>>>>>>>>>>>> <<<<<<<<<<<<<<<<<<<< AP

1>>Probe Request    --------------->                                       

                                                          <-----------    2>> Probe response

3> Association Req ---------------->

                                                          <-------------- 4> Asso Response

and so on..

never a AP will initiate the probe.. its the clients who initiate..

I request you to let me know if my undrestanding are correct.. if not correct me by even more briefing ur requirement...



Re: Querying a wireless access point for nearby clients

Hi John,

I didn't understand your question the same way as Surendra. Let's see who got the right understanding :-)

If you want to list clients linked with an AP :

show dot11 assoc    (shows a summary view)

show dot11 assoc all (shows a detailed view with signal strength and so on).

On a controller environment, you can go on the WLC web page : monitor->clients and filter by AP mac address.



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New Member

Re: Querying a wireless access point for nearby clients

Hi Nicolas and Surendra.

Thank you so much for your replies.

Actually, I looking for something slightly different:

Not to initiate association or see who's associated .... rather see who's in range, even if not associated.

So if a client is nearby, can i query for the signal strength from the client and an identifier of some sort? (Maybe MAC?)


I really appreciate your help.


Re: Querying a wireless access point for nearby clients

My answer still stands with the following add-on :

-IOS APs don't track non-associated clients

-Lightweight APs do, and the method to see them is the same. Their state will be "probing"

But this is only true if the clietn was indeed actively probing. If a client is silent, there is no way for the AP to "poke" it.