HI Marc,thanks for reply. Standalone nodes are new hardware appliances delivered b Cisco with pre-installed 3.0 OS. The cluster where it requires to be added is already on 3.1. Now, the challenge is we can't add these hardware appliances into cluster...

Hi Marcelo,During the Process of Cisco ISE deployment in version 3.1, we are having one issue related to Hardware appliance OS version. The SNS appliances which needs to be added in ISE 3.1 cluster are on ISE 3.0 pre-installed OS. How to re-image tho...

Thanks a lot Marcelo, much appreciated and helpful! Will reach out if stuck in any technicalities. 

Thank you Marcelo for the valuable advice.So the understanding is only a Admin node has to be build from scratch in 2.7 and restore the 2.2 config on it. Once restore is successful. Only Standalone PAN to be upgraded in 3.1 and then to add other node...

Hi Marc, many thanks for picking it up. The issue is existing environment is in version 2.2 hardware hosted services. New proposed to be Infra will be on version 3.1 on VM.Current Architecture is a distributed environment with PAN,MNT and 2 PSN's (SN...