Recently while searching for a networking related topic, I accidently landed in this website. It’s an awesome website and got the info I have been looking for a long time. If you are new to VMware and want to understand the background on virtual networking. I strongly recommend you to go through “The-great-vswitch-debate-one-big-pdf-file”.
It’s a well written document on virtual networking and can be extremely useful if you are learning virtualization and serious about making a carrier of it.