4.3. Survivable Network Design and Traffic Restoration Concepts
4.3.1. Typical Network Architecture
In terms of studying the survivability of communication networks, it is useful to examine the basic structure of a typical network architecture. Here, we consider the Internet and the technologies used. Note that as traditional telephone and private data services migrate to the shared Internet, the survivability of the architecture becomes more important. Broadly speaking, the Internet consists of a set of interconnected networks that can be categorized based on their geographic size and function as either access networks, metropolitan area networks (MANs), or wide area networks (WANs), as shown in Figure 4.1.
Figure 4.1. Typical network architecture. ...
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