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This chapter is from the book


This chapter provided an overview of the fundamentals of IP routing and IP switching and the control planes of operation. In summary, it showed how a router makes a forwarding decision, which consists of three basic components:

  • The routing protocols, which are used to build the routing table (RIB)
  • The routing table, which is used to program the switching mechanisms (that is, CEF)
  • The switching mechanisms used to perform the actual packet forwarding
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