Internetworking (the creation of a network of networks)

Two important problems to address are heterogeneity and scale

Internet Protocol (IP) is the key tool used to build scalable heterogeneous internetworks

Host A

Host B

Router

(gateway)

#1

Router

(gateway)

#2

Router

(gateway)

#3

1.5 kB

packet

maximum.

4.5 kB

packet

maximum.

532 B

packet

maximum.

1.5 kB

packet

maximum.

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