Routing - Difference between IGPs and EGPs

IGPs are used in order to route traffic within an Autonomous System (AS). Such protocols include EIGRP OSPF and IS-IS.

Exterior Gateway Protocols (EGPs) are used in order to route traffic between ASs. BGP is an example of an EGP. BGP is currently the only EGP in any production network today and is the routing protocol used on the Internet.

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