What are the differences between external, internal and private networking in a virtualized environment?
Hyper-V offers three types of virtual networks: external, internal and private. External virtual networks bind to the physical NIC so that virtual machines can access the physical network. Internal virtual networks are network connections that allow virtual machines to communicate with other virtual machines running on the host server, as well as with the host server itself. Private virtual networks allow communications only on virtual machines residing on the same host server. Private virtual networks do not let a virtual machine communicate with the host server, and neither private nor internal virtual networks allow communications with the outside world. VMware uses the concept of virtual switches. Virtual switches can be created to isolate traffic to virtual machines that are running on the host server, or they can use an uplink to bridge the virtual switch and the physical network, allowing communications with the outside world. You cannot interconnect multiple virtual switches, h
