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Cisco IOS XR Fundamentals by Dawit Birhanu, Mark Ghattas, Syed Natif Nawaz, Mobeen Tahir

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Chapter 7. Routing IGP

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This chapter covers the following topics:

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An Interior Gateway Protocol (IGP) is used for exchanging routing information between network elements within a single administrative domain (also known as an autonomous system or AS). IGP-based routing protocols distribute routing information throughout the AS and consist of either flat or hierarchical network topologies. Four commonly used IGPs are Routing Information Protocol (RIP), Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), and Intermediate System to Intermediate ...

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