Chapter 4. Spanning Tree Protocol

Terms you'll need to understand:

  • Spanning Tree Protocol (STP) and 802.1D

  • Bridge Protocol Data Unit (BPDU)

  • Bridge identifier

  • Port and path costs

  • Hello, maximum age, and forward delay timers

  • Root and designated ports

  • Common Spanning Tree (CST) and Per-VLAN Spanning Tree (PVST)

Techniques you'll need to master:

  • Understand the three main functions of a transparent bridge

  • Know what BPDUs are used for

  • Understand how the root switch is elected and how the root and designated ports are chosen

  • Know the states a port goes through when STP is running and how long convergence can take

  • Compare and contrast CST and PVST

  • Configuring and verifying STP on your Catalyst switch

The need for high reliability and availability in today's networks ...

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