So Microsoft introduced this cool feature on Windows Server 2012 called IPAM (IP Address Management).
To install this make sure it is not on a Domain Controller.
Installation is pretty simple, open up server manager, Add new features and select IPAM.
Here are a few firewall inbound rules that need to be enabled on your DNS and DHCP Servers:
DNS Service (RPC)
DNS Service (RPC Endpoint Mapper)
Remote Service Management (RPC)
Remote Service Management (RPC-EPMAP)
Remote Event Log Management (RPC)
Remote Event Log Management (RPC-EPMAP)
Now you need to give IPAMUG access to the Event Log Readers Built-In Security group in AD. Your machine running IPAM needs to be part of IPAMUG.
The key to this is patience, once all the Firewall Ports/Inbound Rules are correct and access give as above everything will be green.
For more info check out MS article:
http://technet.microsoft.com/en-us/library/hh831353.aspx
Hope it helps.
