Preface 1. Starting Simple What ls IP Routing? Directly Connected Networks Static Routing Dynamic Routing The Routing Table Underlying Processes Summing Up 2. Routing Information Protocol (RIP) Getting RIP Running How RIP Finds Shortest Paths Convergence Subnet Masks Route Summarization Default Route Fine-Tuning RIP Summing Up 3. Interior Gateway Routing Protocol (IGRP) Getting IGRP Running How IGRP Works Speeding Up Convergence Route Summarization Default Routes Classful Route Lookups Summing Up 4. Enhanced Interior Gateway Routing Protocol (EIGRP) Getting EIGRP Running EIGRP Metric How EIGRP Works Variable Length Subnet Masks Route Summarization Default Routes Troubleshooting EIGRP Summing Up 5. Routing Information Protocol Version 2 (RIP-2) Getting RIP-2 Running RIP-2 Packet Format RIP-1/RIP-2 Compatibility Classful Versus Classless Routing Protocols Classful Versus Classless Route Lookup Authentication Route Summarization Summing Up 6. 0pen Shortest Path First (0SPF) Getting OSPF Running OSPF Metric Definitions and Concepts How OSPF Works Route Summarization Default Routes Virtual Links Demand Circuits Stub, Totally Stubby, and Not So Stubby Areas NBMA Networks OSPF Design Heuristics Troubleshooting OSPF Summing Up 7. Border Gateway Protocol 4 (BGP-4) Background Getting BGP Running How BGP Works Load Balancing Route-Filtering Connecting to the Internet Choosing an ISP Troubleshooting BGP Summing Up 8. AdministrativeControls Filter Routing Information Rate the Trustworthiness of a Routing Information Source Redistribute Routes Maximum Number of Paths Summing Up