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Many of the scalable design features explored in
the first two chapters, such as load balancing and route summarization,
work very differently depending on the routing protocol used. Routing
protocols are the rules that govern the exchange of routing information
between routers. The open architecture and global popularity of TCP/IP has
encouraged the development of more than a half-dozen prominent IP routing
protocols, each with its unique combination of strengths and weaknesses. Because
routing protocols are key to network performance, you must have a clear
understanding of each different protocol's attributes: convergence times,
overhead, and scalability features.
This chapter explores the routing process
including: default routing, floating
static routes, convergence, and route calculation.
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