To install OSM Release TWO from source, requirements are the following:
8 CPUs, 16 GB RAM, 100GB disk and a single interface with Internet access Ubuntu16.04 as base image, configured to run LXD containers.
Note: If you wish to install OSM Release TWO from inside a LXD container, you will need to enable nested LXD containers (instructions are on the ETSI OSM website)
So what is a VNF (also often called a NFV)…
A virtualized router is called a Router VNF.
So if you virtualized Quagga, BIRD or the new Free Range Routing (FRR) to do BGP, OSPF etc you would have a Router VNF.
Other VNF examples include applications like - firewalls, IPS, GGSN, SGSN, RNC, EPC etc