WLC 4402: Using the Service Port for NTP?

Answered Question
May 23rd, 2008
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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

Correct Answer by Scott Fella about 9 years 4 days ago

That is how I usually stage the WLC and the AP's, by setting the time and time zone on the WLC. I would have to say it is like 50/50 that clients either use an NTP or not.

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Scott Fella Sat, 05/24/2008 - 19:20
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Well the thing is, that when you configure NTP on the wlc, the wlc will use the management port and not any other port. so I think the only way you can do this is if your management port is not on your internal network is to use a public NTP server. If you have set your time and time zone on the wlc, then you really don't have to worry about NTP.

George Stefanick Sun, 05/25/2008 - 05:10
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Actually, we did the very same thing for a customer. We just set the time on the controller.



Correct Answer
Scott Fella Sun, 05/25/2008 - 18:27
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That is how I usually stage the WLC and the AP's, by setting the time and time zone on the WLC. I would have to say it is like 50/50 that clients either use an NTP or not.

pmccubbin Mon, 05/26/2008 - 02:47
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Hi Scott and George,

Thanks for resolving my issue.

Cheers!

Paul

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