Chapter 11

Switching and Virtual LANs

The Following CompTIA Network+ Exam Objectives Are Covered in This Chapter:

  • 1.4 Explain the purpose and properties of routing and switching.
    • Spanning Tree Protocol
    • VLAN (802.1q)
    • Port mirroring
  • 2.1 Given a scenario, install and configure routers and switches.
    • VLAN (trunking)
    • Interface configurations
  • MAC filtering
  • PoE
  • VTP configuration
  • QoS
  • Port mirroring

Layer 2 switching is the process of using the hardware addresses of devices on a LAN to segment a network. Because you’ve got the basic ideas down, I’m now going to focus on the more in-depth particulars of Layer 2 switching and how it works.

You already know that switching breaks up large collision domains into smaller ones and that a collision domain ...

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