Homo-Adminus Blog

This will be one of those posts I’d like to publish primarily to be able to coma back later and check it out instead of reading docs again

So, we have a server with two (or more) network interfaces are we need to be able to use more than one interface in our VDS machines. How do we set it up?

First of all, I’d like to say that this method was tested and works for bridged configurations where host and guest machines’ interfaces are connected to bridges and you assign IPs on your guest machines w/o routing.

So, we need to create two bridges in our host environment. In Debian it is simple - here is my /etc/network/interfaces file:

With this configuration we have two bridges and each of them has physical interface connected to it. Next our step is guest machine setup. In /etx/xen/our-machine.cfg we add:

And in /etc/xen/xend-config.sxp we need to comment out all “(network-script *)” lines and use “(vif-script vif-bridge)” for virtual interfaces initialization.

And our last step is to configure guest machine’s network. Again, Debian’s config file:

That is it - pretty simple and straightforward configuration.