Appendix O. Spanning Tree Protocol Implementation


This appendix contains an entire chapter that was published as a chapter in one of the past editions of this book or a related book. The author includes this appendix with the current edition as extra reading for anyone interested in learning more. However, note that the content in this appendix has not been edited since it was published in the earlier edition, so references to exams and exam topics, and to other chapters, will be outdated. This appendix was previously published as Chapter 3 of the book CCNA ICND2 200-105 Official Cert Guide, published in 2016.

Cisco IOS–based LAN switches enable Spanning Tree Protocol (STP) by default on all interfaces in every VLAN. However, network ...

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