Predicting Normal IPv4 Routing Behavior
Different people solve networking problems with different methods. No one method can lay claim as the best method in all conditions. However, as mentioned in Chapter 3, “Troubleshooting LAN Switching,” when learning how to troubleshoot, it helps to take some systematic approach to troubleshooting. So, this chapter (as do the other troubleshooting topics in this book) approaches problems with the same general strategy, as follows:
1. Predict how things should work normally.
2. When a problem occurs, isolate the problem to as specific a reason as possible on as few devices as possible.
3. Discover and fix the root cause of the problem.
This first major section of the chapter reviews IPv4 routing, for the ...
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