> I also found neutron makes much > greater demands on keystone than nova-networking does so needed to > scale out there too, though that wasn't noticeable until somewhere > around 300 instances or so, which is about 1/3 of what I was > targeting, so likely fine for your class room case but something you > want to think about for migrating/creating larger environments. it's also worth mentioning there are blueprints for a NoAuth mode with python-neutronclient [1] -AH https://blueprints.launchpad.net/python-neutronclient/+spec/support-neutronclient-noauth