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TCP/IP Guide by Charles M. Kozierok

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Mobile IP Concepts and General Operation

I like analogies because they provide a way of explaining often dry technical concepts in terms that you can relate to. The problem of mobile devices in an IP internetwork can easily be compared to a real-life mobility and information transmission problem: mail delivery for those who travel.

Suppose you are a consultant working for a large corporation with many offices. Your home office is in London, England, and you spend about half your time there. The rest of the time is split between other offices in, say, Rome, Tokyo, New York City, and Toronto. You also occasionally visit client sites that can be just about anywhere in the world. You may be at these remote locations for weeks at a time.

The problem ...

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