7.1.1 Redundancy
7.1.2 Redundant topologies
7.1.3 Redundant switched topologies
7.1.4 Broadcast storms
7.1.5 Multiple fame transmissions
7.1.6 Media access control database instability

7.2.1 Redundant topology and Spanning Tree
7.2.2 Spanning Tree Protocol
7.2.3 Spanning Tree operation
7.2.4 Selecting a root bridge
7.2.5 Stages of Spanning Tree port states
7.2.6 Spanning Tree recalculation
7.2.7 Rapid Spanning Tree Protocol