| TCP/IP
Network transmission |
| IP-network |
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| TCP, UDP |
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| ICMP |
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| R |
| R |
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| TCP, UDP |
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| ICMP |
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| R |
| Workstation 2. |
| Workstation 1. |
| Repeater |
| Repeater |
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| n | TPC/IP tasks:
end-to-end transmission, error correction, |
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| maintain packet
order |
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| n | Internet is
based on datagrams that address subnets via |
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| routers |
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| n | A simple routing
could be accomplished by a lookup table |
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| between target
IP and subnet IP |
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