CCNA Portable Command Guide, Second Edition

Chapter 14. STP and EtherChannel

This chapter provides information and commands concerning the following topics:

• Spanning Tree Protocol

  —Enabling Spanning Tree Protocol

  —Configuring the root switch

  —Configuring a secondary root switch

  —Configuring port priority

  —Configuring the path cost

  —Configuring the switch priority of a VLAN

  —Configuring STP timers

  —Verifying STP

  —Optional STP configurations

  —Changing the spanning-tree mode

  —Extended System ID

  —Enabling Rapid Spanning Tree

  —Troubleshooting Spanning Tree

  —Configuration example: STP

• EtherChannel

  —Interface modes in EtherChannel

  —Guidelines for configuring EtherChannel

  —Configuring Layer 2 EtherChannel

  —Verifying EtherChannel

  —Configuration example: EtherChannel

Spanning Tree Protocol ...