cisco controller and DHCP

[Solanin19]

Hello ,

 i'm looking for a way for the airport 1815 to get a IP from the dhcp server on my firewall. Is it possible ? 

[AndreaTornaghi]

Dear,

try to take a look into this doc:

https://www.cisco.com/c/en/us/td/docs/wireless/access_point/1815/quick/guide/ap1815igetstart.html

You need configure option 43 in DHCP scope on ASA.

The option must contain the ip address of WLC.

[Solanin19]

The firewall is not a cisco, i can't configure option 43 the dhcp service. 

[balaji.bandi]

What firewall is this ? is the Firewall handle this DHCP request ?

If the Firewall not able to have option 43, then you need to manually configure, this is not the best practice in terms of change later.

but no option we only have this option to do so.

[Mikey Boy]

Hi, do you mean to get a management IP address onto the AP, or allow clients to receive IP addresses from the firewall?

If it is the latter, a firewall will generally not issue an address to a proxied DHCP request, which is the default state for most WLC deployments.

Under the interface on the controller that you are using on the relevant WLAN set the DHCP Proxy mode to disabled as in the below image, remove the IP address of the DHCP server.

Regards

[Solanin19]

I wasn't clear, my bad:
My goal is that a client connected to the cisco airport get a IP from the dhcp server who's on a non cisco firewall.
desable the proxy dhcp don't seems to work. 

[Mikey Boy]

If you look in the firewall logs do you see the DHCP request message? Is it being dropped?