[Fedora-xen] creating a private network of virtual machines

[Gergely Buday]

Hi there,

I would like to create a network of virtual machines, divided into
private subnets so that one can exercise network configuration,
routing etc. on them.

Is Xen the right solution for me? I do not want to run heavy software
on the machines, only the networking.

And, is there any open source software that helps creating such
network topologies?

Thanks

- Gergely