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Acing the CCNA Exam, Volume 1
book

Acing the CCNA Exam, Volume 1

by Jeremy McDowell
July 2024
Beginner
608 pages
18h 25m
English
Manning Publications
Audiobook available
Content preview from Acing the CCNA Exam, Volume 1

15 Rapid Spanning Tree Protocol

This chapter covers

  • The standard and Cisco-proprietary versions of Spanning Tree Protocol
  • A comparison of the port costs, states, and roles of STP and Rapid STP
  • How RSTP-enabled switches react to topology changes
  • How RSTP link types affect convergence
  • Optional STP features Root Guard, Loop Guard, and BPDU Filter

In this chapter, we will continue to look at Spanning Tree Protocol (STP). There’s a reason STP is enabled by default on almost any vendor’s switches: Layer 2 loops are disastrous for a LAN. However, there are some downsides to the original STP as defined by IEEE 802.1D, the main one being speed; it can take up to 50 seconds to converge and reach a new, stable state after a change in the LAN. When STP ...

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Publisher Resources

ISBN: 9781633437678Publisher SupportPublisher WebsiteErrata Page