Hi.:smileyhappy:
As far as i aware | and also from the userguide itself
The IAP supports termination of a VPN tunnel on the Aruba controller.
VPN features are ideal for:
enterprises with many branches that do not have a dedicated VPN connection to the corporate office.
branch offices that require multiple APs.
Individuals working from home, connecting to the VPN.
This new architecture and form factor seamlessly adds the survivability feature of Instant APs with the VPN
connectivity of RAPs — providing corporate connectivity to non-corporate.
VPN Configuration
The VPN configuration functionality enables the IAP to create a single VPN tunnel from the Virtual
Controller to a Aruba Mobility Controller in your corporate office. Here, the VPN tunnels from the Instant
APs terminate on the Aruba Mobility Controller. The controller solely acts as a VPN end-point and does not
supply the Instant AP with any configuration.
It's from the userguide: (read chapter 29)
It hope it clearly you question - the VPN solution in the InstantAP is just for connecting to Aruba Mobility Controller.
More info:
http://www.arubanetworks.com/techdocs/InstantMobile/Advanced/Content/Instant%20User%20Guide%20-%20volumes/VPN_Configuration.htm
Have a lovely day.
Me