Purchasing Insurance for Your (Network) Shipment

Purchasing Insurance for Your (Network) Shipment

When you ship something valuable, you might choose to spend some extra money to buy insurance. Then, if the shipper loses or damages the package, the shipper pays you to replace what you shipped.

With TCP, you get something a little better. With a real physical package, if it gets lost, it's lost. If you lose a bunch of bits, though, you can make more! In fact, Chapter 3, "Building a Network: It All Starts with a Plan," covered the basic idea, which I'll repeat in Figure 9-4 for a quick review.