Chapter 2. The Internet Protocol and Routing
The design of the network layer, including the Internet Protocol (IP) and routing, has a major influence on many issues in Web caching and replication. These issues range from how Web proxies are deployed (Chapter 8), to how Web requests are redirected to server replicas selected to process these requests (Chapter 14), to how server replicas are selected (Chapter 16). This chapter describes the most important aspects of IP in the context of Web caching and replication.
The fundamental goal of IP is to deliver datagrams—the L3 data packets containing a header and data portion—between hosts on the Internet. This means that IP is supposed to hide the physical (L1) and data link (L2) layers of different ...
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