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Are you talking about installing ISE on a Linux KVM hypervisor? I am confused, because in your last post you mentioned ESXi.
Not sure what you mean. The ISE application itself is treated as an appliance - we don't get to chose the underlying OS (RHEL 7.x) and Cisco maintains all the yum patching via regular patches. You don't need a Redhat Satellite or maintenance etc. Cisco handles all that for you. ISE is a black box.
If you want to run ISE on Linux KVM hypervisor then check out the ISE 2.4 Installation Guide. It says KVM on RHEL 7.0 - Have you tried it on RHEL 6? I would hope that it's a bare metal server running RHEL and not RHEL on ESXi - nested virtualisation cannot do you any good, unless it's a lab/test environment.
my customer inventory is
VMWare vSphere Client Version 5.5.0
VMWare ESXi Version 5.5.0 with REHL 6
VMWare Hardware Version 8
My question is, if ISE is compatible with RHEL 6 , or we need to upgrade to RHEL 7 at least ?
Are you saying that you cannot choose RHEL 7 from the list of OS when you create a new VM that you want to install ISE 2.4 on?