Part II


Chapter 15

Enhanced Switched Technologies

The following ICND2 exam topics are covered in this chapter:

  • LAN Switching Technologies
    • Identify enhanced switching technologies
    • RSTP
    • PVSTP
    • EtherChannels
    • Configure and verify PVSTP operation
    • describe root bridge election
    • spanning-tree mode
  • Troubleshooting
    • Troubleshoot and resolve spanning-tree operation issues
    • root switch
    • priority
    • mode is correct
    • port states
    • Troubleshoot EtherChannel problems

Long ago, a company called Digital Equipment Corporation (DEC) created the original version of Spanning Tree Protocol (STP). The IEEE later created its own version of STP called 802.1d. Cisco has moved toward another industry standard in its newer switches called 802.1w. We’ll explore both ...

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