Nick Feamster wrote:
I agree. unneling is a *mechanism* by which links can be instantiated over a shared physical infrastructure, but the question "What is network virtualization?" is really a what question (tunneling answers"How?", not "What?")
If that's true, then why is the Internet not already a virtual net, e.g., supporting different transport protocols over IP? IP is shared by different transports. Similarly, ethernet supports different network protocols.
I'd like to see a test that explains how existing stacks aren't considered virtual.
Joe
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