10 The life of a packet
This chapter covers
- A review of the processes involved in delivering a packet from source to destination
- How switches forward frames
- Address Resolution Protocol
- How routers forward packets
The concepts we have covered so far—the TCP/IP model, frame switching, ARP, IPv4 addresses, routing, etc.—are fundamental concepts we will build upon in the rest of this book’s two volumes. In this chapter, we will review many of those concepts and see the role each plays in delivering a packet from the sending host to the packet’s intended destination.
This chapter is unique among the others in this book in that it does not cover new information; everything in this chapter has been covered in previous chapters. Instead of introducing ...
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