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SRIOV bypasses vrouter for passthrough networking


SR-IOV or sriov  interfaces have both physical functions (PFs) and multiple virtual functions (VFs).

https://www.juniper.net/documentation/en_US/vsrx/information-products/topic-collections/release-notes/15.1x49/topic-98089.html#jd0e499



https://www.juniper.net/documentation/en_US/contrail4.0/topics/concept/sriov-with-vrouter-vnc.html


virtio:  https://wiki.libvirt.org/page/Virtio

  • So-called "full virtualization" is a nice feature because it allows you to run any operating system virtualized.

  • However, it's slow because the hypervisor has to emulate actual physical devices such as RTL8139 network cards .

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