Provider vs Tenant networks Before we start, let’s recap the difference between the two major Neutron network types: Tenant networks are: provisioned by tenants used for inter-VM (east-west) communication use Neutron virtual router as their default gateway Provider networks are: provisioned by OpenStack administrator(for use by tenants) match existing physical networks can be either flat (untagged VLAN) or VLAN-based (multiple VLANs) need to be L2 adjacent to network and/or compute nodes Th...