If you are completely removing the old controllers you can do the following :
- Backup Flash
- Before migrating transfer your licenses to the 7200 controller using the LMS site https://licensing.arubanetworks.com/ ( You should contact Aruba TAC, they should be able to assist you with that if you have experience any issues)
- Backup new licenses
- Copy/restored flash to 7210 (confirm it has been restored)
- Make sure all the VLANs/Port/IPs are correct on the 7210
- Move a test AP to the 7210 and make sure that you can access to your SSIDs and get an IP address, Make sure that your Radius/Amigopod (if you have one) information(NAS IPs) is updated with the new IP address of the 7210 if you are planning to change it.
- You could configured DHCP-option 43 and updated to be the new master , once all the APs reboot those should go to the new master IP or you could update the aruba-master and make sure you disable ADP on the old controllers once you are ready to start migrating.
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Note: that the 3200 need a memory upgrade to install 6.2 on those
#7210