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How to analyze the underlying structure of OVS vxlan, I believe that many inexperienced people are at a loss about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Today we are going to analyze the underlying network structure.

Control node

Perform ovs-vsctl show:

Br-int

Br-int connects to the following port:

Tap0d4cb13a-7a is the interface corresponding to vxlan100_net 's DHCP service.

Qvoa2ac3b9a-24 connects the cirros-vm1 virtual network card to the vxlan100_net.

Br-tun

A special port "vxlan-a642100b" is created on br-tun, which is the tunnel endpoint of VXLAN and specifies the IP of the local (devstack-controller) node and the devstack-compute1 (devstack-compute1) node VTEP.

Computing node

Execute ovs-vsctl show

Br-int

Qvoab219616-01 on br-int connects the cirros-vm2 virtual network card to the vxlan100_net.

Br-tun

The port "vxlan-a642100b" is also created on the br-tun, the configuration content is relative to the control node, and the IP of the local (devstack-compute1) node and the remote (devstack-controller) node VTEP is specified.

The current network structure is as follows:

It is important to note that no matter how many VXLAN,devstack-controller and devstack-compute1 there are, all data is transmitted only through the tunnel established on the "vxlan-a642100b" pair of port.

After reading the above, have you mastered the method of how to analyze the underlying structure of OVS vxlan? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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