KMS Server on Server 2012 R2 Standard Server

I installed a KMS server on Server 2012 R2.    I am trying to activate a Server 2008R2 Standard Server.   What is the process for activating the server with the KMS server.  Do I add a KMS license to the Server 2008R2 instance?   I have failing requests in the snippet?
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stressedout2004Asked:
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jmcgOwnerCommented:
KMS is only useful for server licensing if you have 5 or more clients that need to register through it. Until you have 5 clients, you can use the KMS key to activate clients, but later on, when you do have more than 5 clients, you will want to undo this by re-keying the servers with the generic client key.

If you are building a network that will have the requisite 5 or more clients right away, you can use the generic key. The initial activations will temporarily fail, but KMS keeps track and once it sees 5 different clients, it will begin to activate them.

And it's 5 clients using the same edition/version of Windows Server. In your case, the KMS would need to have the keys loaded for both 2012 and 2008 and would need to see 5 2012 clients before it started activating them, and 5 2008 clients before it would start to activate them.
cwstad2Commented:
You will need to add the KMS key to your KMS server server, which in turn will activate the correct version of the OS.

Howerver you will need a minimum of 5 as stated above,

Check this article below, it will assist you with the process

http://www.adamfowlerit.com/2012/08/18/how-to-add-your-kms-keys-for-windows-8-and-server-2012/
stressedout2004Author Commented:
What's confusing to me is that I removed the key KMS key that I activated the server with a MAK key before the KMS was setup.  So I did the following:  

cscript c:\windows\system32\slmgr.vbs /cpky   <-- This clears out the current product key
cscript c:\windows\system32\slmgr.vbs /rearm <-- This rearms the client
reboot
After running the commands above:
Microsoft prompt came up and asked to activate in 3 days with a grace period of 30 days.      I clicked on the activate button with out entering a key and the server activated.    What did this server successfully activate against?      What more bothersome, is that the count does not increment.  Is that proper?
Jeremy WeisingerSenior Network Consultant / EngineerCommented:
... I activated the server with a MAK key ...
Since you already activated the server, Microsoft sees the hardware ID in it's database and activates the server. You will need to test with other hardware or a different version of Windows.

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