VMM 2012 R2 Preview Console Crashes When You Try to Add Logical Switch to Hyper-V 2012 Host


Consider the following situation:

  • You install VMM 2012 R2 Preview
  • You install manually Windows Server 2012 Hyper-V Host/s
  • You install manually Windows Server 2012 R2 Preview Hyper-V Host/s
  • You add the Hyper-V 2012 and 2012 R2 hosts to VMM 2012 R2
  • You create Port Profile for teaming with Dynamic algorithm
  • You create Logical Switch to which you add the created Port Profile
  • You open the properties of Hyper-V 2012 host and in Virtual Switches tab you’ve try to add Logical Switch. Immediately the VMM 2012 R2 Preview console crashes with the following error:
  • vmmconsolecrash1

vmmconsolecrash2

Reason:

Dynamic algorithm for NIC Teaming is available only on Hyper-v 2012 R2 hosts. Even if you create a port profile with a supported by Hyper-V 2012 NIC Teaming algorithm and assign it to different logical switch you still might get the error.

Resolution:

Change the port profile with Dynamic algorithm to use Host Default that way when the Hyper-V host is 2012 Hyper-V Port algorithm will be used and for 2012 R2 Host Dynamic algorithm will be used. The console will not crash on trying to add logical switch on Hyper-V 2012 host.

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