The Basics of a LAN and How Ethernet Switching Works

Channel:
United States Robert Mayer
Subscribers:
6,570
Published on ● Video Link: https://www.youtube.com/watch?v=GCpJg3dfrMY


Duration: 23:23
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18

A LAN is simply a collection of devices constrained within a localized area. More specifically, in the context of 802.3 (Ethernet), the term LAN would be used to define any network using Ethernet for communication. We can also include wireless (802.11) into this as well.

Ethernet switches play the biggest role in today's LANs, and so do wireless access points. But have you ever been curious about how Ethernet switches work? Well for starters, they learn MAC addresses and forward frames. That's just a textbook answer though... If you want to dive a little deeper, check out the video! I'm hoping that you find it useful, and as always - I hope you learn something!

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Timeline:
0:00 - Introduction
1:03 - What is a LAN?
3:21 - Defining Unicast, Broadcast and Multicast
5:23 - Why Do We Use Both MAC and IP Addresses?
7:25 - How do Ethernet Switches Forward Traffic?
10:03 - How Do Devices Learn Other Device's MAC Addresses? (ARP)
13:32 - Switches Learning MAC Addresses
21:02 - Just Stick With Me Here, There's Less Than 3 Minutes Left!



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Tags:
LAN
What is a LAN
How do switches work
How does Ethernet work
What is ethernet
Ethernet
Layer 2
MAC Address
Why do we need MAC Addresses
Why do we need IP Addresses
Ethernet switching
How do switches learn MAC Addresses
How do switches forward traffic
What is a frame
Frame vs Packet
OSI Model
Broadcast
Unicast
Multicast
IGMP
Ethernet switch
CCNA
CCNP
What is ARP
How does ARP work
ARP
Address Resolution Protocol
How do devices know MAC Addresses
Cisco
RMTech