Chapter 9. Multihoming, Multicast, and Mobility

It moves.

—Galileo Galilei

Introduction

In Chapter 5, “Naming and Addressing,” we looked at our understanding of naming and addressing. The main insights we took from that were Saltzer’s results and our insights about Saltzer as well as naming for applications and application protocols that followed from our understanding of the upper layers in Chapter 4, “Stalking the Upper-Layer Architecture.” In Chapter 6, “Divining Layers,” we realized that addresses were not quite what we thought they were: not just the names of protocol machines, but identifiers internal to a distributed IPC facility. In Chapter 7, “The Network IPC Model,” we assembled an architecture model based on what we had learned in ...

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