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Hyper-V Networking–NIC Teaming

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If you look at the advanced features of a network adapter in Hyper-V, you may have noticed the NIC Teaming option below:

NIC Teaming

And wondered what this was about.

In most deployments you will enabled network adapter teaming in the host operating system, and connect a virtual switch to the team.  If you do this you will never need to enable this option.

But there are situations where you will not want to use network adapter teaming in the host operating system, and instead you will want to connect two virtual network adapters to the virtual machine and configure teaming inside the guest operating system.  One situation where you would want to do this is if you were using SR-IOV enabled network adapters.

The effect of enabling this option is that if there is a connection failure on the physical network adapter that is being used by the virtual switch, we also disconnect the virtual network adapter.  This is required to ensure that network teaming functions correctly inside the guest operating system – but will cause problems if network teaming is not configured inside the guest operating system.

Cheers,
Ben

Comments

  • Anonymous
    August 26, 2014
    Hi Ben, But, how do you create the Team inside the guest? For example, now in 2012 you can create the Team by the Windows itself if it's the guest operating system. But, with, for example Windows Server 2003 as guest, Microsoft leaves all the work to the network adapter software made by the manufacturer. In real hardware, if you have an HP computer with HP network adapter, in wich you install Windows Server 2003, HP must provide the software required to create the Team (of course in the case that the hardware support it) wich makes it transparent to Windows Server 2003 itself. In the case of virtualized machine in Hyper-V, the manufacturer of the Virtual Synthetic adapter is Microsoft, so where is the software to create the Team inside that Windows Server 2003 computer?. And with the Legacy adapter? (as I remember this last one is emulated from real hardware). Thank you and Cheers, Akuma.

  • Anonymous
    September 06, 2015
    Hey Ben, thanks for the clarification at the end, it's exactly what I was looking for.