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IAP Virtual Controller DNS?

Hi experts,

 

I have always configured a VC IP in my Instant clusters, but I have never configured a VC DNS. What is the purpose of this? I have read the following:

 

"If the Virtual Controller IP is in a different subnet, configure the Virtual Controller mask, gateway, and VLAN"

 

http://www.arubanetworks.com/techdocs/Instant_40_Mobile/Advanced/Content/UG_files/virtual_controller/Virtual_Controller_IP_Ad.htm

 

It doesn't say anything about the VC DNS. Then, in my case where the VC IP are in the same subnet, do I need to configure the VC DNS?

 

Also I have found the Aruba Instant User Guide says the following:

 

"If the virtual controller IP address is in the same subnet as the Instant AP, ensure that you select Custom from the Virtual Controller network
settings drop-down list and configure the following details: Virtual Controller Netmask, Virtual Controller Gateway, Virtual Controller DNS, Virtual Controller VLAN"

 

That's the opposite of the first excerpt I wrote above:

 

"If the Virtual Controller IP is in a different subnet, configure the Virtual Controller mask, gateway, and VLAN"

 

Am I missing anything?

 

Regards,

Julián

Re: IAP Virtual Controller DNS?

Hi guys,

 

Any idea?

 

Regards,

Julián

Guru Elite

Re: IAP Virtual Controller DNS?

You should not need it.  the VC gets DNS from DHCP.  You would only configure DNS if you were manually setting ip address information.

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Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.
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Re: IAP Virtual Controller DNS?

Hi Colin,

But in many cases I set the DNS IP along with the static IP in every IAP. In this cases if I set that DNS IP in the VC DNS field and leave blank the DNS field in every IAP, will all the IAPs get VC DNS address?

Regards,
Julián
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