How does basic networking work in Hyper-V?

re: How does basic networking work in Hyper-V?

Mahr Haider Iqbal — Wed, 06 Feb 2013 08:32:15 GMT

I started to configure window server 2012, I have some problem in networking hyper-v configuration

how I started step-by step.

1- I Installed role of active directory and DNS was installed with itself.

2- I installed role of hyper-v without selection of any network adapter.

I want to know how to make a virtual network adapter for hyper-v clients

Thanks

re: How does basic networking work in Hyper-V?

Malik — Sun, 30 Dec 2012 17:54:19 GMT

Great Article!

Dear John

I have two machines. On machine1 I have Windows Server 2008 Enterprise with two physical NIC IP4 addres 10.0.0.1 and 10.0.0.2. This server have AD & DNS roles. I installed Hyper-V manager, and created an external virtual network. As you described I got a new virtual NIC on the physical server and the physical NIC was bound to just the Virtual Network Switch Protocol.

On the machine2, I installed Hyper V server (core installation). This machine also have two NIC ip 10.0.0.3 & 10.0.0.4. All seemed to work so I then built two virtual machines for test and set their virtual NIC IP4s: to 10.0.0.11 & 10.0.0.12.

Now I can access the virtual machine from Hyper V Manager.

Machine1 and Machine is able to ping each other, but the virtual machines I created in machine are unable to ping Machine1 10.0.0.1.

I would appreciate your feedback and comments.

Regards

re: How does basic networking work in Hyper-V?

Dude999 — Sat, 30 Jun 2012 12:12:19 GMT

Hallo John

I see you still answer questions :)

I still have some problem wrapping my mind about this.

I have question about picture blogs.technet.com/.../9_thumb.jpg

After creating the "test external network" you have two entry in network connection.

But picture has "Physical NIC", "Virtual Netowork Switch" and "Virtual NIC"

Which one isnt listed in Network Connections?

Also you mention in one of your answer to a different post, that you have a "2nd part" of this article, but I cant see any link.

Maybe that could answer my 2nd question.

In a 2-physical nic configuration, what should tcpip settings be on the nic named "Test External Network"?

(I hope my questions makes sence)

re: How does basic networking work in Hyper-V?

John Howard -MSFT — Tue, 01 May 2012 21:58:51 GMT

No, the above applies to R2 SP1 as well.

re: How does basic networking work in Hyper-V?

Tomislav — Tue, 01 May 2012 07:55:26 GMT

Excellent article, thank you. Is there some change with Hyper-V 2008 R2 SP1?

re: How does basic networking work in Hyper-V?

Gandalf50 — Thu, 15 Dec 2011 04:27:01 GMT

Good overview and guide.

Thanks

re: How does basic networking work in Hyper-V?

Marcel — Wed, 11 Aug 2010 10:05:37 GMT

Suppose i have two nics in the host one for vm's and one for the host. With multiple vm's and the host on the same vlan, how do i setup the default gateway for the two nic's?

re: How does basic networking work in Hyper-V?

John Howard -MSFT — Tue, 15 Dec 2009 19:56:03 GMT

Scott - So to confirm you have disabled through ncpa.cpl OR removed the virtual NIC in the parent partition for the external virtual network in use by the VMs? If so, I'm not sure why you are referring to a seperate IP address for the parent vNIC as there shouldn't be a NIC.... Can you be a bit more explicit about the exact config? As for unregistering DNS, once the appropriate vNIC is disabled and/or removed, you can go into DNS snapin on a DNS server to remove the offending entry. You can also run ipconfig /registerdns on the Hyper-V machine to ensure that only the other NIC without an external virtual network is registered in DNS.

Thanks,

John.

re: How does basic networking work in Hyper-V?

John Howard -MSFT — Mon, 30 Nov 2009 20:22:42 GMT

Zullu - sincere apologies - completely missed your comment before. To make a passthrough disk available for use in a VM, you need to mark it offline in the parent partition, either using diskmgmt.msc or diskpart.

Thanks,

John.

re: How does basic networking work in Hyper-V?

John Howard -MSFT — Tue, 24 Nov 2009 16:01:27 GMT

Bonder - you don't say if you are running 2008 or 2008 R2. If the latter, there is a good chance you are hitting a known Hypervisor bug. There is a hotfix available in KB974909. Can you apply that if applicable?

Thanks,

John.