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BGP defines the basis of routing
architectures in the Internet. The segregation of networks into
autonomous systems has logically defined the administrative and
political borders between organizations. Interior Gateway Protocols
can now run independently of each other, but still interconnect via
BGP to provide global routing.
In this chapter, you learned the
practical implementation details for BGP as part of the overall
design problem in building reliable Internet connectivity. This
chapter examined specific attributes of BGP and how they are applied
individually and together to address this design problem. Although
the terminology, attributes, and details of this chapter are
specific to BGP, the general concepts and problems raised are
pertinent to routing architecture design, regardless of what
specific protocols are being utilized.
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