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Mini Introduction to BGP

What Is BGP?. Border Gateway Protocol BGP-4The de-facto interdomain routing protocolBGP enables policy in routing:Which information gets advertised and howBGP is a Distance Vector like protocolWithin an AS, Internal Gateway Protocol (IGP or I-BGP). How A BGP graph Looks Like. Each AS has design

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Mini Introduction to BGP

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    1. Mini Introduction to BGP Michalis Faloutsos

    2. What Is BGP? Border Gateway Protocol BGP-4 The de-facto interdomain routing protocol BGP enables policy in routing: Which information gets advertised and how BGP is a Distance Vector like protocol Within an AS, Internal Gateway Protocol (IGP or I-BGP) Vectoring Distributed Routing protocol Each Router knows little about the network topology Only best next-hops are chosen by each router for each destination network Best end2end paths result from composition of all next-hop choices Does not require any notion of distance Does not require uniform policies at all routers Vectoring Distributed Routing protocol Each Router knows little about the network topology Only best next-hops are chosen by each router for each destination network Best end2end paths result from composition of all next-hop choices Does not require any notion of distance Does not require uniform policies at all routers

    3. How A BGP graph Looks Like Each AS has designated BGP routers BGP routers of an AS communicate internally with another protocol (IGP)

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