Here is another question regarding NTP on the WLC. I have looked at the "NTP Configuration and Synchronization for Unified Wireless Network Devices" as suggested by Top Net Pro Rob Huffman.

I also reviewed the configuration guides and they all say the same thing about the Management Interface:

"The management interface is the default interface for in-band management of the controller and connectivity to enterprise services such as AAA servers."

I am wondering if the same is true for NTP. Or can we use the Service Port for NTP given the following situation:

We setup a 4402 controller for internet only access. Due to security reasons, we do not want the traffic crossing the corporate network. We do want to manage the WLC from the corporate network so we setup the service port to do that. It all went well.

Can the controller also use the corporate NTP servers through the service port? While we cannot add a default gateway to the service port interface, we can create a specific route to the NTP server that would point out the service port interface.

Does anyone know if this will work?

Thanks.

Paul