Ethernet is the technology behind almost every wired LAN. This course starts with the cables and builds up to a complete enterprise LAN. You start with physical media and collision domains, then learn how switches forward frames, then VLANs, trunking and VTP. The course ends with ARP, the protocol that links IP addresses to MAC addresses.
- 1. One LAN, many technologies: copper cable to the desk, a fibre uplink between switches, PoE powering the access point, and switches forwarding frames by MAC address.
What you'll learn
Ethernet from the cable up
The physical and data link layers: frames, MAC addresses, Ethernet standards, and copper and fibre cabling.
How switches decide
MAC address learning, forwarding and flooding, redundant links, EtherChannel and switching modes.
Segment with VLANs
VLANs, trunks, the native VLAN and routing between VLANs, plus VTP for sharing VLANs between switches.
Local delivery with ARP
How hosts find MAC addresses, ARP's extra features, and how to defend against ARP attacks.
Skills you'll gain
- Ethernet
- Cabling
- LAN switching
- EtherChannel
- PoE
- VLANs
- Trunking
- VTP
- ARP
Who is this for?
This course is for CCNA students and anyone starting out in networking. If you know what an IP address is and roughly how the OSI layers fit together, you're ready.