Errata

The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update

Version	Location	Description	Submitted By	Date submitted	Date corrected
Printed, PDF,	Page 57, 62 Spanning Tree chapter	The production mods causing the figures appearing in this chapter to disagree with the text have been addressed.	Bruce Hartpence	Apr 16, 2012	Sep 28, 2012
Printed	Page 57, 62 Figure 3-5, 3-14	During production the diagrams are often redrawn. In this case there were two changes that are inconsistent with the text discussion and other diagrams. 1 � Figure 3-5 depicts Switch 2 on top and Switch 3 on the bottom. These should be reversed. 2 � Figure 3-14 depicts BPDUs flowing to the root bridge which is just all kinds of wrong. The arrow between switch 2 and 3 should be going the other way.	Bruce Hartpence	Feb 01, 2012	Sep 28, 2012