Network types supported by Neutron
With the ML2 plugin, Neutron supports a range of traditional and overlay networking types provided by type drivers, including:
Local
Flat
VLAN
VXLAN
GRE
A local network is one that is isolated from other networks and nodes. Instances connected to a local network may communicate with other instances in the same network on the same compute node but may be unable to communicate with instances in the same network that reside on another host. Because of this designed limitation, local networks are recommended for testing purposes only.
In a flat network, no VLAN tagging or other network segregation takes place. In some configurations, instances can reside in the same network as the host machines.
VLAN networks are networks that utilize 802.1q tagging to segregate network traffic. Instances in the same VLAN are considered part of the same network and are in the same layer 2 broadcast domain. InterVLAN routing, or routing between VLANs, is only possible through the use...
