IP Hierarchical Routing 15 February, 2001 1 Hierarchical Routing

� � � � IP Hierarchical Routing 15 February, 2001 1 Hierarchical Routing �� 15 February, 2001 The Computer Communications Course 2 1

� � � � � � � � Hierarchical Routing �� 15 February, 2001 The Computer Communications Course 3 Intra-AS and Inter-AS routing �� 15 February, 2001 The Computer Communications Course 4 2

� � � � � � � � � Intra-AS and Inter-AS routing �� 15 February, 2001 The Computer Communications Course 5 Routing in the Internet �� 15 February, 2001 The Computer Communications Course 6 3

Internet AS Hierarchy 15 February, 2001 The Computer Communications Course 7 Hierarchical Routing in the Internet AS: Autonomous System = routing domain IGP: Interior Gateway Protocol: Intra-domain routing EGP: Exterior Gateway Protocol: Inter-domain routing AS1 MCI EGP IGP AS2 EGP EGP IGP EGP AT&T IGP AS3 Backbone Border router 15 February, 2001 The Computer Communications Course 8 4

� � � � � � � � � � � � � � � Intra-AS Routing: IGP �� 15 February, 2001 The Computer Communications Course 9 RIP (Routing Information Protocol) �� 15 February, 2001 The Computer Communications Course 10 5

� � � � � RIP (Routing Information Protocol) �� 15 February, 2001 The Computer Communications Course 11 RIP: Link Failure and Recovery �� 15 February, 2001 The Computer Communications Course 12 6

IP Hierarchical Routing 15 February, 2001 1 Hierarchical Routing - PDF document

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