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LAN Switching

How Cisco switches handle redundant links, bundle them with EtherChannel, forward frames internally, power devices with PoE, and share VLANs with VTP.

Intermediate · 6 lessons

You already know how a single switch learns addresses and forwards frames. This course is about running several switches together on Cisco IOS: keeping backup links without loops, bundling links for more bandwidth, and keeping VLANs consistent across the network.

What's in this course

1. Redundancy and Link Bundling

Why switched networks need redundant links, and how EtherChannel bundles them.

  1. 1.1 LAN switching with redundant links
  2. 1.2 EtherChannel (Port-Channel)

2. Switch Operation

How switches forward frames internally and power the devices plugged into them.

  1. 2.1 Switching modes: store-and-forward vs. cut-through
  2. 2.2 Power over Ethernet (PoE, PoE+, UPOE, UPOE+)

3. VLAN Trunking Protocol (VTP)

Sharing the VLAN database between switches, and the risks that come with it.

  1. 3.1 What is VTP?
  2. 3.2 Configuring and verifying VTP v2

Start the first lesson →