PACKET SWITCHING
HOW INTERNET SENDS DATA
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A Message Travels in Pieces
Sender
R1
R2
R3
R4
R5
Recv
Received:
H
1
E
2
L
3
L
4
O
5
5 packets
HELLO pieces
Different routes
each packet's
at the receiver
1. Packet Switching
Data is broken into small packets
Each packet takes its own route
2. In Every Packet
Sender + receiver address (IP)
Packet number + data
3. Faida
One path blocked → another
The internet runs on this
COMPUTER SCIENCE · NETWORKS · PUNJAB BOARDS
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