Chapter 5. Enterprise BGP Core Network Design

Enterprises have typically favored the use of IGPs to provide company-wide IP connectivity. The case for BGP is often made when an enterprise has reached scalability limitations within its IGP. BGP provides enhanced scalability when there are high prefix counts and improves the enterprise’s ability to divide administrative control.

Network scalability is improved through increasing network hierarchy and better prefix summarization. Summarization in many networks can be very challenging ...

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