Virtual switches
You may be wondering, since we are going to create a virtualized lab environment, how we are going to create a network to ensure that all the various virtual machines have connectivity with one another. Do we need some network cables, a network switch, or even other network appliances? Most importantly, we need to ensure that our virtual environment is isolated from the rest of our existing network and from the internet, as we do not want to be launching an inadvertent attack on a public server, as this would be illegal and entail legal complications.
Fortunately for us, each hypervisor contains a virtual switch, which provides us with a basic layer 2 switching functionality. Some hypervisors provide virtual LAN (VLAN) assignments ...
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