The steps for to signup for an eval account are
1. go here and create a HPE Green Lake account first (
https://common.cloud.hpe.com/)
2. Once the HPE account is created use the credentials to login and then create Aruba Central account

3. Once the account is created click on Application menu on top and click on "View Available Application"

4. Click on " Setup Application" to deploy Aruba Central application and select your relevant region

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Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba.
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