Eric's Technical Outlet

Learning the hard way so you don't have to

Hyper-V Network Binding Order

A message from a LinkedIn member prompted me to look into how binding order works in the Hyper-V world. After looking around, I found out that this was a much larger issue than I knew. So, I’ve put together a comprehensive blog post that covers the issue. You can read it on the Altaro blog. It is applicable to both Hyper-V R2 and 2012.

4 responses to “Hyper-V Network Binding Order

  1. Eric Siron January 3, 2013 at 6:18 pm

    If either end is using multiple physical adapters dedicated to iSCSI traffic, then MPIO is superior to teaming. If you don’t team them and you don’t enable MPIO, then only one adapter can be used per connection. The initiator cannot do it alone.

    On a Hyper-V cluster we have at work, we use MPIO instead of the method I outlined in that post. The reason is that our networking and SAN teams require that all connections into the iSCSI network be used for nothing else except iSCSI and they do not allow the iSCSI VLANs to be trunked or even connected to other networks. In that case, we set up two adapters on each Hyper-V host just for iSCSI traffic. MPIO makes more sense in that environment.


    • Alessandro January 3, 2013 at 6:28 pm

      Ahhh ok.. this now makes more sense, from the article sounds more like a best practice.
      Well anyway in most cases nics are teamed and of course the separation you are talkin about is not a problem with iscsi hba.

      I am right now playing with corefig.. nice !

      Nice articles.. keep up the good work.



  2. Alessandro January 3, 2013 at 6:02 pm


    Nice article.. i just don’t understad why you would setup mpio even on the target side.. and even if there multiple adapters for iscsi traffic..
    it is an initiator thing ..
    may you explain me better what you meant…




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