Errata

Ethernet: The Definitive Guide

Errata for Ethernet: The Definitive Guide

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The errata list is a list of errors and their corrections that were found after the product was released.

The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.

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

Version Location Description Submitted by Date submitted
?
Section "10BASE-T Signal Encoding", Sub-section "Physical line signaling", first paragraph

Using balanced differential signalling, it's not the case that, "In each wire pair, one wire is used to carry the positive amplitude of the differential signal (from 0 volts to +2.5 volts), and one wire carries the negative amplitude of the signal (from 0 volts to –2.5 volts)." Rather, one wire is used to carry the signal (either +2.5 volts or -2.5 volts) and the other wire carries the inverse of the signal. The differential receiver then sums (subtracts, actually) the signals, reinforcing the signal while rejecting common mode noise.

 Clay McClure  Mar 03, 2016 
Chapter-9
2nd paragraph

Chapter-9, 2nd paragraph states:

The most widely used 100 Mb/s media standards are based on specifications first developed in the 1990s for the Fiber Distributed Data Interface (FDDI) network standard.

Note: Its not Fiber, it should be Fibre Distributed Data Interface (FDDI)

 Pravat Nayak  Aug 22, 2020 
Other Digital Version 27
1

Note: Unfortunately since I'm using the Kindle edition of the book, I cannot accurately reference page numbers (there aren't any shown in the Kindle edition). The page number I was required to enter can be ignored (it merely is the page where chapter 3 starts).

In the Kindle edition of the book, the author has written in chapter 3:

_____________________________________________________

Tip

It's still possible for a station to use half-duplex mode when connected to a switch port at 10 and 100 Mb/s over a twisted-pair cable. However, higher-speed media systems support full-duplex only.

_____________________________________________________

Unless I'm misinterpreting Table 5-2 in Chapter 5, the 1000BASE-T entry in that table is implied to be running in half-duplex mode, which contradicts the tip above.

 Mark Terner  Jan 14, 2015 
PDF Page 29
2nd paragraph from below

At the end of the first row of the paragraph, there is a missing space between the sentences: "(...) 32-bit frame check sequence (FCS) field.The FCS contains a cyclic (...)"

 Anonymous  Feb 04, 2023 
Printed Page 66-67
Last paragraph on 66. First paragraph and Figure 5-1 on page 67.

Figure 5-1 on page 67 lists two computers connected. Computer A is listed as connecting at 10Base-T but the paragraph above states that computer A is capable of 10/100. Also, according to the same paragraph, computer B only supports 1000Base-T, yet it connected at 100Base-T. If the switch, computer A and computer B all support Auto-Negotiate, then shouldn't computer A connect at 100 Mpbs and computer B at 1Gbps?

Eric Jackson  Dec 29, 2014 
Printed Page 91
Last Sence of first paragraph

The last sentence states "minimum of 25.50 watts". Should that be "maximum" instead?

 Eric Jackson  Jan 02, 2015 
PDF Page 126
"10BASE-T Signal Encoding" section

"Signals sent over 10 Mb/s media systemsuse a"

->

"Signals sent over 10 Mb/s media systems use a"

 Jon Forrest  Oct 25, 2016 
Printed Page 191
2nd to last paragraph on the page.

Its states "The standard groups the cable specifications together as 10GBASE-S for short-reach multimode and 10GBASE-S for long-reach single mode". Are they suppose to be duplicated in name or is this a typo?

 Eric Jackson  Jan 26, 2015