[ovs-dev] Some questions about OVS native tunneling

Junguk Cho jmanbal at gmail.com
Sat Jul 30 23:24:34 UTC 2016


Hi, All.

I followed this manual (
http://openvswitch.org/support/config-cookbooks/userspace-tunneling/).

>From the manual, I have some questions about native tunneling with DPDK
option.

First, after creating userspace switch (datapath_type=netdev) in the
manual, how it assigns ip to bridge? In addition, why does it work ip or
ifconfig command since it is an userspace switch?

Second, It seems ovs has the routing tables (/lib/ovs-router.c).
So after tunnelling port (in this manual, it is vxlan0 port), does it
decide next destination based on routing tables?

Last question, in this example, does it entirely work in an userspace which
does not need context-switch or referring to kernel?

Thank you in advance.



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