Hi,
I managed to get SR-IOV with an Intel I350 NIC to work.For this I
followed the documentation on this page:
https://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_VFs_in_a_libvirt_.3Cnetwork.3E_definition
But as I have more VMs then VF on the NIC I also have a bridge wich
serves the other guests. As I run Debian Buster as host I followed the
documentation here:
https://wiki.libvirt.org/page/Networking#Debian.2FUbuntu_Bridging
If I use only the SRIOV everything works as expected. All guests can be
reached for the network and the guests and host can reach each other.
The same goes for a sole bridged environment.
As I dived into the issue I found an answer form the intel community:
https://community.intel.com/t5/Ethernet-Products/82599-VF-to-Linux-host-bridge/td-p/351802
It says I need to add the "VF mac addresses and eth0 mac address to
bridge forwarding database".
I have done this with the following command:
bridge fdb add 52:54:00:3c:1c:e6 dev eth_lan0
The mac address is from my VM which is on the bridge. And the eth_lan0
interface is the physical interface of my bridge and also the PF of my
I350 NIC.
This seems to work. But doing this manually is annoying and a bit of a
hassle when creating new VMs on the bridge.
I there a way to let libvirt do this work?
Best regards
Philipp
PS:
This presentation shows it pretty well on page 33:
https://events.static.linuxfound.org/sites/events/files/slides/LinuxConJapan2014_makita_0.pdf
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