Windows 2012/2012 R2 have a very rich server manager, which we can use to manage multiple servers from a single console.

One of the main advantage of the new server manager is we can easily manage multiple servers using single console.The maximum no of server which we can manage is depend of your source servers resource configuration.But most of our infrastructure environment we have multiple versions of Windows servers such as Windows 2008R2. When we are trying to manage lower versions of servers using Server 2012 server manager it's giving error.

To overcome this problem we have to install Windows Management framework 3.0 on windows 2008/2008r2 computers.(* if we are managing these servers from windows 2012 R2, we have to install management framework 4.0) 

Now we have to execute below mentioned PowerShell commands on the destination server

Set-ExecutionPolicy remotesigned

Configure-SMRemoting.ps1 -force -enable

Now we can easily manage lower version's of Windows Server using Server 2012 R2/2012