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Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide by Wendell Odom

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Chapter 1. Spanning Tree Protocol Concepts

This chapter covers the following exam topics:

LAN Switching Technologies

Identify advanced switching technologies

RSTP

PVSTP

EtherChannels

Configure and verify PVSTP operation

Describe root bridge election

Spanning Tree Protocol (STP) allows Ethernet LANs to have the added benefits of installing redundant links in a LAN, while overcoming the known problems that occur when adding those extra links. Using redundant links in a LAN design allows the LAN to keep working even when some links fail or even when some entire switches fail. Proper LAN design should add enough redundancy so that no single point of failure crashes the LAN; STP allows the design to use redundancy without causing some other problems. ...

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