Chapter 7. Interface Configuration
Webster's Dictionary defines the word interface as “the place at which independent and often unrelated systems meet and act on or communicate with each other.” Interfaces allow communications between two entities. Examples of interfaces include the keyboard, mouse, and monitor of your PC; they allow you to communicate with your computer. Layers of the OSI model have standardized interfaces that allow communication up and down the protocol stack. Routers have interfaces that allow communication to and through them. These router interfaces can be physical or virtual; for example, a virtual interface is used as a logical process.
A router interface can also be known as a port, which also allows communication to another ...
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