Wlan controller option 150

Question

Hi friend,
Its posible enable option 150 (for phone) in wlan lan controller 5508, i want to create a DHCP POOL for my Wireless IP PHONE, but i can this option.
other solución could be to use a DHCP externel ( like router), but the broadcast traffic dont pass from Wlan Controller to Router.
Could you helpe me please.
Marco.

Answer 1

Marco,
     The DHCP server in the WLC is not fully functional.  You can only set the subnet, GW and DNS that the client uses.  You can't set any of the advanced features, like option 150 for the TFTP server.
Now, under the interface for the phone subnet, what do you have set for the DHCP server?  if you set it to a router/switch/server the WLC will proxy the request to the device.  and the client will get the correct address.
If you are using a secrity device, this won't work.  You'll need to disable DHCP proxy. 
From the GUI Controller > Advanced > DHCP, and uncheck the box.
From the CLI config dhcp proxy disable
Once this is done, make sure you have the ip helper-address under the L3 interface and point to the DHCP server.
HTH,
Steve
Please remember to rate helpful posts or to mark the question as answered so that it can be found later.