+ NeutronGlobalPhysnetMtu:
+ type: number
+ default: 1496
+ description: |
+ MTU of the underlying physical network. Neutron uses this value to
+ calculate MTU for all virtual network components. For flat and VLAN
+ networks, neutron uses this value without modification. For overlay
+ networks such as VXLAN, neutron automatically subtracts the overlay
+ protocol overhead from this value. The default value of 1496 is
+ currently in effect to compensate for some additional overhead when
+ deploying with some network configurations (e.g. network isolation over
+ single network interfaces)