Ethernet & MAC addresses
Ethernet & MAC addresses: anatomy of one frame. Part of the free Link to NetEra networking curriculum.
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Switching
Ethernet, MAC tables, VLANs, STP
How switches learn
How switches learn: the MAC table fills itself. Part of the free Link to NetEra networking curriculum.
VLANs & trunking
What VLANs and trunks are, how the 802.1Q tag works and why the native VLAN matters: with a simulated Cisco switch to configure yourself.
Spanning Tree Protocol
Spanning Tree Protocol: redundancy without the meltdown. Part of the free Link to NetEra networking curriculum.