Chapter 7. Scalable iBGP Design and Implementation Guidelines

In a typical ISP environment, an AS contains many BGP-speaking routers. Fully meshing all these iBGP speakers would result in both a high BGP session count and high resource consumption per router. This chapter focuses on two common solutions—route reflection and confederation. Using these two solutions, this chapter demonstrates practical guidelines with extensive examples of how to design a scalable iBGP routing architecture. Through four case studies in Chapter 8, “Route Reflection and Confederation ...

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