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How do I restore network conenctivity for Exchange on Hyper v server

Posted on 2011-09-08
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Last Modified: 2012-05-12
Today power outage damaged a network card on our serrver that hosts Exchange and Terminal server. I replaced the network card and cloned its settings as the original card appeared.
The physical network card is set to DHCP
The Virtual card is set to use the DNS entry for the serrver name which is where I am confused.

Exchange has 192.168.168.14  in DNS and the BDC server (VM HOST) shoudl have 192.168.168.16. When I try to ping BDC server I get a dns lookup of x.x.x.14 then a timeout and response fomr ip 192.168.168.46

Can anyone help me straighten this out, currently all systems are back up but I am not able to get Exchange back up. DNS issues?

Thank you

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Question by:manelson05
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Author Comment

by:manelson05
ID: 36503955
The host machine has internet and local access, the issue appears to be witht he VM network configuration.
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LVL 17

Expert Comment

by:Spartan_1337
ID: 36504552
Install another vNIC, disable the first vNIC and setup with static IP
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Author Comment

by:manelson05
ID: 36504765
Use the same settings as the original vNIC, correct?
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LVL 17

Expert Comment

by:Spartan_1337
ID: 36504787
Yes, keep the same settings and see how that works out for you.
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Author Comment

by:manelson05
ID: 36504789
How do I add a new vNIC?
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Author Comment

by:manelson05
ID: 36504934
This would be an internal adapter or external?
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LVL 17

Accepted Solution

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Spartan_1337 earned 500 total points
ID: 36504996
Go into the Hyper-V server, go to the setting of the VM.
Click on Add Hardware, on the right select Network Adapter and then click on Add button.

Yes, this is an internal adapter for the VM.
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Author Comment

by:manelson05
ID: 36505100
When I first logged on to the server and the NIC was bad no lights on it, I suspected hardware.
This NIc has been replaced I am not sure on its original configuration.
The only adapter that was not showing disabled was the vNIC I cloned. I need to have a physical NIC setup for the physical server, correct? and the Vnic set to DHCP since each virtual machine has its own corresponding IP and DNS lookup, is that correct?
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LVL 17

Expert Comment

by:Spartan_1337
ID: 36505162
Well, you could use DHCP if you wanted to but it makes sense to statically assign at least the Host server NIC (for management purposes)
Obviously you will need to assign the same static IP for the Exchange VM (to avoid having to re-write your firewall rules).

All IP's should be on the same subnet and gateway.
When you set up the new, add the correct internal static IP (192.168.168.14) and see if you can ping it from the host.
 
If not, then post the results of the ipconfig /all command and let's see where this is failing.
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Author Comment

by:manelson05
ID: 36510310
Spartan, I got exchange back up, your advice worked! Thank you so much!
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LVL 17

Expert Comment

by:Spartan_1337
ID: 36510786
Glad I could be of assistance.
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Author Closing Comment

by:manelson05
ID: 36548953
Spartan,  thanks for the crash course in virtualisation.

Thank you
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