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Navigating Network Complexity: Next-generation Routing with SDN, Service Virtualization, and Service Chaining by Jeff Tantsura, Russ White

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Chapter 2. Components of Complexity

Working on broken networks is always an exciting business to be in—particularly if you work for a large vendor where large broken networks are brought to your door every day. To survive the constant onslaught, you eventually develop a set of simple and quick patches or changes you can always rely on to settle a network down so you can start the process of actually troubleshooting the problem. For example, one set of steps network engineers dealing with failures in a distance-vector control plane might take to stabilize the network could be:

• Look at the routing protocol topology database.

• Determine how many paths, on average, there are to any given destination in the table.

• Configure interfaces as passive ...

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