Go in your Configuration Group, then Devices, Configuration, System, under Virtual Controller you can edit the Virtual Controller IP:

If you scroll further down you can configure the Dynamic RADIUS Proxy setting.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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Original Message:
Sent: Dec 22, 2022 01:23 AM
From: Ajin Skariah
Subject: Assigning virtual IP for virtual controller in Aruba Central
Hello,
Where can I find the option to put virtual IP in IAP controlled by Aruba Central? I need to put virtual IP to configure in the radius server for 802.1x authentication setup. I cannot find this option in the Central.
Thanks,