Virtual Network Interface Cards (vNICs)

OpenStack Cloud Instances with GvTAP Agents can be configured with one or more vNICs.

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Single vNIC—If there is only one interface configured on the instance with the G-vTAP Agent, the G-vTAP Agent sends the mirrored traffic out using the same interface.

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Multiple vNICs—If there are two or more interfaces configured on the instance with the G-vTAP Agent, the G-vTAP Agent monitors any number of interfaces. It provides an option to send the mirrored traffic out using any one of the interfaces or using a separate, non-monitored interface.

Note:  vNICs are only applicable if the GvTap Agent is installed on the instances being monitored. It is not applicable for OVS Mirroring or OVS Mirroring +DPDK.