Internets101

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Organization overview

It's not just a big truck The packet brigade Internets are like ogres

Layers - OSI vs IP

Layer 1 - The tubes

Copper pair FTTX Coax

Layer 2 - I was framed

Frame relay Ethernet MAC PPP

Layer 3/4 - you address me sah?

IPv4/IPv6 TCP/UDP BGP ATM

Layer 5-7 - How this app 2 me?

Layer 8 - meatspace politechs

LECs

ISPs

NAPs