Home > General > Connecting two Open vSwitches to create a L2 connection between sites

Connecting two Open vSwitches to create a L2 connection between sites


Remi Bergsma's blog

Recently I played with Open vSwitch and it’s awesome! Open vSwitch is a multilayer virtual switch and it brings a lot of flexibility in the way you can create interfaces and bridges in Linux. It’s also a Linux distribution independent way to configure these things. Switching in software!

To create a bridge, simply run:

You can also create another bridge on top of it, to handle a VLAN for example:

Even better, create a bond based on LACP:

This is all quite nice but still basic. It gets interesting when you realise you can connect two switches like you can put a patch cable between physical switches. To test how cross platform this works, I setup two boxes: a CentOS 7 box and a Ubuntu 15.04 one. This shows it in a picture:

openvswitch-vxlan-interconnect

We’ll create a new bridge and add a vxlan interface that connects to the other vswitch. Then create a…

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