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VM-FEX and SR-IOV

I am aware of the benefits as published in the literature about the benefits of VM-FEX and SR-IOV but would like some clarifications/opinione from anyone who is currently running this sort of setup.

OS: Windows 2012 hyper-v

UCSM: 2.1(2a)

I under the following:

SR-IOV is a specification that allows multiple VMs to share a single PCIe device correct?

In order to utilize this specification on Windows 2012 you have to enable/configure VM-FEX is UCSM correct?

This means you can't run VM-FEX on Windows 2012 without SR-IOV correct?

One is the specification and the other is the actual mechanism (VM-FEX) to achieve SR-IOV?

It essentially will by-pass the virtual switch in the parent partition, enabling traffic to be switched in the FIs, correct?

Thanks for any clarification.....

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Cisco Employee

VM-FEX and SR-IOV

That's right! the virtual machine network will be controlled by the UCS directly instead the Hyper-V virtual switch.

This is a good document to clarify this idea:

http://www.cisco.com/en/US/solutions/collateral/ns340/ns517/ns224/ns955/ns963/solution_overview_c22-687087.html

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