Lecture Notes 03: Link Layer

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Recap: Networking

A high-level view of the Internet:

Washington Post infographic

A short video on the organization of the internet

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The Link Layer (Data-Link + Physical)

Here is a little animation of how CSMA/CD works:









Here is a little animation of how token-ring works:

Switching

Modern local arean networks (LANs) use switches:

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Further Reading

1. A concise description of Hub vs Switch vs Router
2. If we could see wifi (Vice)
3. Deeper look into Ethernet packets and Switching

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1-Minute Debrief

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