IPv6 Concepts
The layered model used in the Internet.
Internet Protocol stack
IPv6 sits in layer 3 network layer.
It handles pieces of data called packets.
Devices connected to the Internet are hosts or routers. A host can be a PC, a laptop, embedded device with sensors and actuators.
They can send and/or receive data packets.
Hosts are the source or destination of the packets. Routers are in charge of packet forwarding.
They also responsible of choosing the next router.
The packet finally forward towards the final destination.
Internet is composed of a lot of interconnected routers. They receive data packets in one interface and send then as quick as possible using another interface towards another forwarding router.
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