IAP split DNS

by on ‎07-11-2014 02:56 PM
Question Why IAP tries to handle DNS queries when I have VPN configured?
Why am I unable to do DNS lookup for Internal network with VPN configured?
Why am I unable to reach internal sites via URL?
Environment Aruba Instant APs configured with VPN tunnel to Aruba Controller

 

 

With VPN configuration; it's necessary to have "Enterprise Domain Names" configured for DNS queries to be sent to Corporate DNS server. Without this configuration; all DNS queries would be handled by Instant's local DNS server and result in unreachability of internal resources when accessed using fqdn.

 

 

Aruba Instant Split-DNS Overview

 

rtaImage.jpg

 

Configuration ::

 

WebUI::

 

rtaImage2.png

 

 

 

 

CLI  ::

 

(config)#internal-domains

           domain-name  <name>

 

 

Note :: With the split-dns architecture; Aruba Instant AP must get DNS Server IP and should be able to reach the DNS server for external domains name lookup to work.

 

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