finding access points a client is associated with

[roncro]

Hello,

I don't know if this is a routing question "per se",  but I am wondering if there is something like  the linux traceroute tool, to find a route through which a node "goes".

However,  I would like to find what access point a lient is using if I know it's ip address.  The access points, switches and router are all Cisco (2960s switches, 2900 router and aironet access points)

any ideas?

thanks,

Ron

[Karsten Iwen]

Best place to find this information is your Wireless LAN Controller. If you want to find the client "the routing way" and your WLAN is in FlexConnect-Mode, then you can first look at the arp-table of the Layer3 switch to find the IP-to-Mac mapping. In the Mac-Address-Table you find the Port where this Mac-Adress is located. If it has an AP connected, you are typically done. If it is a switch, the Mac-Address-Table of that device will give you the next port. You repeat that until you have the AP.

[roncro]

well,  I don't have a wireless LAN controller, from what I understand it is a dedicated device for managing access points. I just have a bunch of 'independent' Cisco access points. I don't know what "FlexConnect-Mode" is,  so I am probably not using that. The switches I use a Cisco 2960s switches, so technically they are layer 2, not layer 3 I think. If a 2960s can do this anyway,  then is there a utility to do that?  (I can write something myself, if I know how that would be done.)

thanks,

Ron

[paul driver]

Hello

If you have a windows client - I remember a cli command you may want to try it might show you the associated AP

 netsh wlan show wlan all

[roncro]

sorry for the late reply,  was abroad for a while.

Since  the APs allow SSH access, I was wondering if they'd also allow key/host based SSH access.

Ron