Routing - Routing The routing table gives the next router...

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Routing The routing table gives the next router necessary to reach the destination network. The source of the table information can be: Manual: By hand Small networks OK if routes never change Automatic Software creates/updates the routing table using information from neighboring routers. It is needed for lager nets It changes routes if failure.
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IP packet from A to M A 40.0.0.0 B C R1 128.10.3.0 G H R2 M K I J L D 216.109.11 2.0 F E 128.10.5.0 128.10.4.0 128.10.3.5 128.10.3.9 40.0.0.5 40.0.0.7 216.109.112. 45 216.109.112. 48 128.10.5.9 216.109.11 2.1 40.0.0.11 128.10.3.1 128.10.4.7 128.10.4.1 0 128.10.3.2 128.10.4.2 128.10.5.2 A: Routing Table Target Net Net/Subnet Mask Next Hop 40.0.0.0 255.0.0 Directly 128.10.3.0 255.255.255.0 40.0.0.11(R1) 128.10.5.0 255.255.255.0 40.0.0.11(R1) 128.10.4.0 255.255.255.0 40.0.0.11(R1) 216.109.112.0 255.255.255.0 40.0.0.11(R1) Default: 255.255.255.255 40.0.0.1(R3) R3 40.0.0.1 Internet IP I P IP: Esrc=Ea, Edst=ER1, IPsrc=A, IPdst=M
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IP packet from A to M A 40.0.0.0 B C R1 128.10.3.0 G H R2 M K I J L D 216.109.11 2.0 F E 128.10.5.0 128.10.4.0 128.10.3.5 128.10.3.9 40.0.0.5 40.0.0.7 216.109.112. 45 216.109.112. 48 128.10.5.9 216.109.11 2.1 40.0.0.11 128.10.3.1 128.10.4.7 128.10.4.1 0 128.10.3.2 128.10.4.2 128.10.5.2 R1: Routing Table Target Net Net/Subnet Mask Next Hop 40.0.0.0 255.0.0 Directly 128.10.3.0 255.255.255.0 Directly 128.10.5.0 255.255.255.0 128.10.3.2(R2) 128.10.4.0 255.255.255.0 128.10.3.2(R2) 216.109.112.0 255.255.255.0
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