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How does HyperV Virtual Machine > Virtual Switches work?

I am installing a Hyper V on Win Server 2012 R2 and it is asking me to select the Network adapter for Virtual Switch. I have only one physical network port on server which is listed as the only option.

However, at just below it, it is displaying a notice that 'We recommend that you reserve one network adapter for remote access to this server. To reserve a network adapter, do not select it for use with a virtual switch.'

That clearly says, I should not select this only network adapter. What should I do?

I am planning to use it to create multiple VMs for testing purposes that will need network access. And I'm not sure how to configure this correctly. Also should I need to add another physical network adapter?

Expert advise needed.

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However, at just below it, it is displaying a notice that 'We recommend that you reserve one network adapter for remote access to this server. To reserve a network adapter, do not select it for use with a virtual switch.'

That clearly says, I should not select this only network adapter. What should I do?

Ideally you would have one dedicated NIC to use for connecting to and managing the Hyper-V host and another dedicated NIC from which to create a Hyper-V virtual switch. In your case, you have only one NIC so you have no choice but to use this NIC for both purposes. There's nothing inherently wrong with doing this.

  • Noted. That means, if I select this, I will still be able to connect to host machine using this adapter. Right? – Krunal Jan 2 at 16:25
  • Yes............ – joeqwerty Jan 2 at 16:33
  • Thanks. And with this can I still publish a web service hosted on VM which can be accessed by outside host in a LAN? – Krunal Jan 2 at 16:41
  • Yes............ – joeqwerty Jan 2 at 17:48
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In a production deployment, you would ideally have a management network separate from the network that your virtual machines use. This text refers to setting up such a management network. You can operate Hyper-V without a separate management network, but that traffic will contend with VM traffic.

  • If I use the current network adapter, will i will be able to connect to LAN & WAN resources from within VM? – Krunal Jan 2 at 16:31
  • Um, you would be able to connect to anything the network allows you to connect to. – Michael Hampton Jan 2 at 17:02

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