ip helper statement for wireless lan controller for 7921 phones

[Rick Morris]

I need to set-up a ip helper statement in my WLC so the 7921 phones grab an IP address. The DHCP scope is on the router.

Where do I point the helper statement to?

[Jon Marshall]

Rick

I would assume that you need to point it to the IP address that the WLC would route to ie. if you do a traceroute from the WLC to the router what interface on the router does the traceroute enter ?

Jon

[Yudong Wu]

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00805e7a24.shtml#air_conf

Under interface configuration GUI of WLC, you can see "primary DHCP server" and "secondary DHCP server", those are the same as ip helper.