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New Member

Switch configuration for AP's

We are trying to install a 2106 controller with a few 1261 AP's which we have downgraded to Lightweight.

We are getting our head around the 2106 config but am unsure as to what config to put on the switchport the AP's connect to.

As far as our reading goes it is best practice to plug the AP's into a network swtich and trunk vlan's from the switch to the controller.

Bit confused about the way the AP's connect to the switch.



Cisco Employee

Re: Switch configuration for AP's

Hi Roger,

WLC to SWITCH ==========>>>  TRUNK allowing all the VALNS that we are using for the wireless part of the network.

LWAPP to the SWITCH ================>>> Access port, so tha tthe AP will ge tthe IP address in desired subnet and communicates with the WLC.



New Member

Re: Switch configuration for AP's

Thanks for confirming that, so how does the traffic flow?

AP-Controller-network or AP-Network.

I want to configure 2 SSID's

One for guest internet and one for corporate access.

Can't figure out how to get each SSID to map to a different vlan if the AP is in a VLAN?



Cisco Employee

Re: Switch configuration for AP's

yup.. Thats the catch... if we are using the LWAPP design.. then

there will be a tunnel which will be formed between the AP and the WLC which is called as the LWAPP tunnel... all the required

information will flow through the tunnel and its encrypted. So what ever we configure on the WLC, all these will flow through the this tunnel and gets pushed to the AP. We do configure the trunk for Autonomous APs which will not use this tunnel. yes... configure SSIDs on the WLC and by default, both the ssid will get broadcasted on the AP.



New Member

Re: Switch configuration for AP's

Thank you that explains it, I could not figure out how the traffic / vlan's would work.

Just setting it up in the lab now

Thanks for clarifying things.

More reading to do!


New Member

Re: Switch configuration for AP's


As I understood ... you need to map existing vlan subnet with your wlan ...

you will have interfaces which you first need to configure on your controller .

1) Management IP of wlc

2) AP- manager

3) dynamic interface which will be used to map the vlan with respective wlan

4) virtual

procedure :

1) if you do not have dhcp seperate configured , first you need to create vlan then configure svi interface with ip address and  dhcp pool for your ap to get ip address in your l3 switch which is connected to your controller with default-router command which will point to your switch

2) login to your controller through console and configure the management IP address

command  : WLC( config ) > interface address management ... ip address... mask .... gateway ( it will be your switch )

configure AP-manager interface with above command with ap manager option ..

Now switch side you configure the one port which is connected to your controller as a TRUNK

connect ap to any port which will configured with above vlan which you have configured in l3 switch

Now AP should get registered and then follow below procedure for getting client connected to respective WLAN

3 ) once you configure login to gui of controller and configure dynamic interface with existing vlan subnet and give the dhcp server ip address if you have or else configure the dhcp pool for users also.

4) go to " wireless " option

5) select the respective wlan and map the vlan with respective dynamic interface

check whether clients got ip address.

please let me know ........ if you have doubt about it

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