Chapter 3. Spanning Tree Protocol Implementation

This chapter covers the following exam topics:

1.0 LAN Switching Technologies

1.3 Configure, verify, and troubleshoot STP protocols

1.3.a STP mode (PVST+ and RPVST+)

1.3.b STP root bridge selection

1.4 Configure, verify, and troubleshoot STP-related optional features

1.4.a PortFast

1.4.b BPDU guard

1.5 Configure, verify, and troubleshoot (Layer 2/Layer 3) EtherChannel

1.5.a Static

1.5.b PAGP

1.5.c LACP

Cisco IOS–based LAN switches enable Spanning Tree Protocol (STP) by default on all interfaces in every VLAN. However, network engineers who work with medium-size to large-size Ethernet LANs usually want to configure at least some STP settings. First and foremost, Cisco IOS switches traditionally ...

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