Chapter 5. Flooding

When outlining the chapters and chapter sequence for this book, I encountered a dilemma: Should flooding or link state synchronization be covered first? Flooding happens whenever a link state router first starts up and forms an adjacency, as does database synchronization. But flooding also happens as an ongoing mechanism in a steady-state network to maintain the database. So does synchronization. I argued with myself over this for some time (which is one of many bits of evidence my wife cites for why I should be in a secure institution someplace).

My conclusion is that flooding can happen without synchronization, but synchronization cannot happen without flooding, so this chapter discusses flooding, and the following chapter ...

Get OSPF and IS-IS: Choosing an IGP for Large-Scale Networks now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.