Check the Single VLAN Architecture VRD.
"Controller and tunneled APs make it possible to scale to larger subnets in the range of /22 to /16."
Also check the considerations on other components in your network, like your L3 switch.
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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: Sep 06, 2021 05:03 AM
From: Darren Rigby
Subject: User VLAN IP size ? what is the largest recommended VLAN size for a Wireless user VLAN?
Is there a definitive answer/quide for this?
We want to move away from pooling and are looking at /20 or maybe even /19 networks.
Our support partner has recommended no bigger than /21 or at a push /20, but Im sure Id seen /16 mentioned in a design guide.
Cheers
Original Message:
Sent: Nov 14, 2014 07:10 PM
From: Colin Joseph
Subject: User VLAN IP size ? what is the largest recommended VLAN size for a Wireless user VLAN?
bosborne,
Yes you can. You just need to enable Broadcast Suppression (Drop Broadcast and Unknown Multicast) on that Virtual AP.