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How to configure  NICS for HYPER V machine on Domain Controller ?

Posted on 2011-09-17
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Last Modified: 2012-05-12
We have hosted a hyper v machine in a DC , which is having 4 NICS.  Out of 4 , the first  NIC  is for DC itself i.e. NIC1 with an  IP of 192.168.1.10.   In advanced settings, adapter binding settings the NIC1 is on top.   For Hyper V machine,  I have created an external  network adapter by selecting NIC 4.   The NIC1 and NIC4 ports are physically connected to a 2960switch.  Now in the  DC’s network adapter shows as  total 5 including one virtual switch.  

Given a separate IP address from different subnet for NIC4  i.e.  192.168.16.20 .  Next ,   removed the tick mark from’ register this connection to DNS suffix’ and disabled NetBIOS over tcpip.     The problem is,  still our dns record shows  both IP  for the domain controller i.e. 192.168.1.10 & 192.168.16.20 , thus effecting our total network performance and connectivity.    This domain controller is a DHCP server too.   Daily our wireless users complaints  that , they are unable to connect the network and when I delete the second ip (192.168.16.20) the connection becomes ok.    

My question what is the wrong in configuration ?  What is the best practice.
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Question by:mylat
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kevinhsieh earned 250 total points
ID: 36554497
If using Windows 2008 R2, in the virtual network configuration uncheck the box to share the NIC with the management operating system. I don't remember the exact terminology, but it is about half way down the box.  If you are using Windows 2008 SP2 on the host, disable all protocols from NIC4 except the virtual switch protocol.

If using Windows 2008 R2 you won't even see NIC4 in the networking GUI of the host. It also won't have that second IP address because Hyper-V will have disconnected it from the host OS.  
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Author Closing Comment

by:mylat
ID: 36574249
HI kevin,

Thank you, you are right when i disabled the 'allow management system to share this network adpater' everything works fine
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