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Port and VIF association

Asked by Sumit Naiksatam

Hi, in the v2 resource model, the port has an attribute device_id which refers to the VM. Is there a way on the Quantum side to find out which VIF this port is associated with?

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Sumit Naiksatam
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Salvatore Orlando (salvatore-orlando) said : 		#1

Hi Sumit,

at the moment the Quantum v2 API does not store the nova-side uuid of the VIF plugged in a particular port.
However, Quantum API generates, and stores, the MAC that will be assigned to such VIF - so you can probably use the MAC to associate Quantum ports to instances' VIFs.

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dan wendlandt (danwent) said : 		#2

Yes, MAC should be unique on the VM.

Sumit, are you talking from the perspective of code that is running within Nova, or as a tenant? If its the former, I believe the current quantum/nova implementation populates the vif-id in the nw-info object using the quantum port-uuid.

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Sumit Naiksatam (snaiksat) said : 		#3

Thanks Salvatore and Dan for your answers.

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Neelakantam (neelugaddam) said : 		#4

Hi,

Is the MAC address unique across different tenants/networks?

thanks