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VMQ on C220?

Hi, does the C220 support VMQ? We are seeing performance issues on a Windows 2012 Hyper-V host where VMQ is default enabled and suspect that lack of VMQ support might be the reason for it.


VIP Green

Have you checked your BIOS

Have you checked your BIOS settings according to

and regarding VMQ support see release notes

Support for Virtual Machine Queue (VMQ)



New Member

Hi wdey, I should add that

Hi wdey, I should add that they are running standalone and not managed by UCS so the release notes you suggested are not applicable here. I have checked bios and can´t find anything about VMQ there.



VIP Green

Hi AndreasI understand; if

Hi Andreas

I understand; if you read the doc about c-series server, mananged by UCSM, you see the following p 287ff

- If you want to configure the VMQ vNIC on a service profile for a server, at least one adapter in the server must support VMQ. Make sure the servers have at least one the following adapters installed:• UCSC-PCIE-CSC-02 (this is the VIC-1225)

- When a VMQ vNIC is configured on service profile, make sure you have the following settings:
• Select SRIOV in the BIOS policy.
• Select Windows in the Adapter policy.
- Create a VMQ connection policy:
UCS-A# scope org
UCS-A /org # create vmq-conn-policy policy name
UCS-A /org/vmq-conn-policy* # set queue-count queue count (number)
UCS-A /org/vmq-conn-policy* # set interrupt-count queue count (number)
UCS-A /org/vmq-conn-policy* # commit-buffer


I don't have a server at this moment to test; I assume (hope), that CIMC of a standalone server should allow you to do the same commands.


New Member

Hi, in this case they are

Hi, in this case they are using the P81E adapter and i believe that it doesn´t support VMQ, it´s discontinued and not listed in the document you referred to. I will look into this further and let you know what i find out.

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