Errata

http://www.oreilly.com/catalog/ethernet

Now reads:

http://www.oreilly.com/catalog/9781565926608

"I would like to thank the inventor of Ethernet..."

NOW READS:
"I would like to thank the inventors of Ethernet..."

change "1998" to "2000"

Paragraph 2 should read:

"This edition contains 1,515 pages 'incorporating IEEE Std 802.3, 1998
Edition, IEEE Std 802.3ac-1998, IEEE Std 802.3ab-1999, and 802.3ad-
2000.'"

Note from the Author or Editor:
Fixed in 2nd edition ms with ref to most recent edition

"by the International Organization for Standardization, whose initials (derived from it's French name), are ISO."

NOW READS:
"by the International Organization for Standardization, whose initials (derived from the Greek "isos," meaning equal), are ISO."

delete "or not"

Note from the Author or Editor:
fixed in 2nd ed ms

The first sentence of the second paragraph did read: "Metcalfe understood..."

Now reads: "Bob Metcalfe understood..."

The third line of the first paragraph did read: "...two devices connected to a full-duplex Ethernet media system to simultaneously..."

Now reads: "...two devices connected over a full-duplex link to
simultaneously..."

The last line of the last paragraph did read: "...standard, probably operating at 10 Gbps, within..."

Now reads: "...standard operating at 10 Gpbs within..."

In the 3rd bullet, "consists" HAS BEEN CHANGED to "consist".

Lines 5-6 of the fourth paragraph did read: "Each port of a repeater hub links individual Ethernet media segments together..."

Now reads: "Each port of a repeater hub links an individual Ethernet media
segment to others..."

The first line of the second paragraph did read: "...the individual ports combine segments..."

Now reads: "...the ports combine segments..."

The first sentence of the fourth paragraph did read: "...numerically equal to or less than the maximum untagged frame size in octets of 1518
(decimal)..."

Now reads: "...numerically less than or equal to 1500 (decimal)..."

This footnote has been added to the first sentence of the last paragraph:

"The range of 1,501 to 1,535 was intentionally left undefined in the
standard."

change "each frame" to "successive frames"
change "between frame reception" to "between frame receptions"

Note from the Author or Editor:
fixed in 2nd ed ms

change "length" to "lengths"

Note from the Author or Editor:
fixed in 2nd ed ms

change "the duplex configuration" to "the duplex configurations"

Note from the Author or Editor:
fixed in 2nd ed ms

change "detects collision" to "detects a collision"

Note from the Author or Editor:
fixed in 2nd ed ms

change "value of k (and hence, the range of the number r) exponentially
increasing for the..." to "value of k increasing (and hence, the range of the
number r exponentially increasing) for the..."

Note from the Author or Editor:
fixed in 2nd ed ms

change "Frame start limit" to "Frame Burst Limit"

Note from the Author or Editor:
fixed in 2nd ed ms

The first line of the first paragraph did read: "...gap between each frame."

Now reads: "...gap between successive frames."

The fourth line of the fourth paragraph did read: "...with this opcode in the first byte of the data field..."

Now reads: "...with this opcode in the first two bytes of the data field..."

The MAC address in Figure 4-2 "PAUSE frame" did read: "01-08-C2-00-00-01" Now reads: "01-80-C2-00-00-01"

change "between each burst" to "between successive bursts"

Note from the Author or Editor:
fixed in 2nd ed ms

"...that the Ethernet interface does not have..."

It now reads:

"...that the Ethernet interface controller does not have..."

"...to the Ethernet interface..."

It now reads:

"...to the Ethernet interface controller..."

The second to last line of the last paragraph did read: "...male jackscrews that connect..."

Now reads: "...male jack screws that connect..."

The last line on the page did read: "...of 0.5 meters..." Now reads: "...of 0.5 meter..."

change "The transmit and receive data signals..." to "The transmit or receive
data signals..."

The last sentence in the last paragraph beginning on page 127 has been deleted.

Under "Fiber Optic Cable" section there is the following sentence:

"The wavelength of light used on a 100BASE-TX ...".

"100Base-TX should be changed to "100Base-FX"

Minor formatting:

Physical line signaling

Is this line supposed to be in the bigger size type? The heading is 12.2.1,
but the type size is the one for #.#.#.#

Note from the Author or Editor:
fixed in 2nd ed ms

Text reads "providing a network with a total maximum cable diameter of 200 meters between stations"
Diameter should be "Distance"

change "e.g." to "i.e."

Note from the Author or Editor:
this chapt eliminated in 2nd ed

In Table 13-2, the values should be aligned on the decimal points.

Note from the Author or Editor:
this chapt eliminated in 2nd ed

change "0.5 meters" to "0.5 meter"

Note from the Author or Editor:
this chapt eliminated in 2nd ed

change "individual segment" to "individual segments"

Note from the Author or Editor:
this chapt eliminated in 2nd ed

In the footnote, changed "...speed of light." to "...speed of light in vacuum."

"Quan. Three" should be "Quan. Four"

Note from the Author or Editor:
this chapt eliminated in 2nd ed

change "0.477 bit times" to "0.477 bit time"
change "0.954 bit times" to "0.954 bit time"

Note from the Author or Editor:
this chapt eliminated in 2nd ed

"...four times the cable radius."

Now reads: "...four times the cable diameter."

"...are still considered..."

NOW READS:
"...is still considered..."

The first sentence in the second paragraph did read: "The optional wiring sequence is widely used in the United States, and many..."

Now reads: "The optional wiring sequence is widely used, and many..."

There are a several ways to tell the difference between a normal,
straight-through cable, and a crossover cable.

"There are several ways"

Note from the Author or Editor:
fixed in 2nd ed ms

change "very" to "ultra"

Note from the Author or Editor:
fixed in 2nd ed ms

"...typically operates over multimode fiber using LED transmitters
with a wavelength of 1350 nm."

It now reads:

"...operates at a wavelength of approximately 1350 nm (1295-1365 nm
is the range allowed in the specifications) and uses LED transmitters
over multimode fiber optic cable."

The last line of the first paragraph did read: "10BASE-FX." Now reads: "100BASE-FX"

The fifth line of the third paragraph did read: "...only two devices at each end of a given link segment, which limits..."

Now reads: "only two devices on a given link segment; one on each end. This
limits..."

The fourth line of the second paragraph did read: "...and two Class II repeaters..."

Now reads: "...or two Class II repeaters..."

"This display provides the sum..."

NOW READS:
"This display provides the sums..."

The first sentence of the last paragraph did read: "...shown on this port is nearly 30 percent of the number... rate for this port is around 30
percent."

Now reads: "...shown on this port is nearly 3 percent of the number... rate
for this port is around 3 percent."

The third sentence of the last paragraph did read: "...(4,294,967,300 to be precise)."

Now reads: "...(4,294,967,296 to be precise)."

The first sentence of the first full paragraph did read: "Note that this port has counted over 3.4 billion total frames..."

Now reads: "...counted over 363 million total frames..."

The fourth line of the second paragraph did read: "...and then counted another 3.4 billion."

Now reads: "...and then counted another 363 million."

The sixth line of the second paragraph did read: "...collision rate is around 30 percent..."

Now reads: "...collision rate is around 3 percent..."

The last two sentences of the third paragraph did read: "Now the collision rate is less than 3 percent of the total frames. This is a much more
realistic picture of the current statistics on this port."

Now read: "Once again, the collision rate is around 3 percent of the total
frames, showing that in this case the original counters were correct. By
clearing the counter displays and taking a new snapshot, we have verified that
the collision rate is being correctly reported."

change "and by 100 for Gigabit Ethernet" to "and by 100 for (full-duplex)
Gigabit Ethernet"

Note from the Author or Editor:
fixed in 2nd ed ms

"Some problems only seem to occur..."

NOW READS:
"Some problems seem to occur only..."

The IEEE standard for Ethernet is quoted as
802.3, 1998 Edition Information technology--Telecommunications and
information exchange between systems--Local and metropolitan area
networks--Specific requirements--Part 3: Carrier sense multiple access
with collision detection (CSMA/CD) access method and physical layer
specifications.

This edition includes all contents of the 8802-3:1996 Edition, plus
IEEE Std 802.3aa-1998, IEEE Std 802.3r-1996, IEEE Std 802.3u-1995,
IEEE Std 802.3x&y-1997, and IEEE802.3z-1998.

Price U.S. $387.00
ISBN 0-7381-0330-6
Product Code: SH94652-NYF

Should read:

802.3, 2000 Edition IEEE Standard for Carrier Sense Multiple Access
with Collision Detection (CSMA/CD) Access Method and Physical Layer
Specifications.

This edition also includes all contents of IEEE Std 802.3ab-1999, IEEE
Std 802.3ac-1998 and IEEE Std 802.3ad-2000.

Print: 1562 pages [0-7381-2673-X] [SH94892-NYF] $295.00 * IEEE Mbr: $236.00
PDF: [0-7381-2674-8] [SS94892-NYF] $443.00 * IEEE Mbr: $354.00

Note from the Author or Editor:
fixed in 2nd ed ms with ref to latest ed of standard

The last sentence in the first paragraph did read: "...maximum bend..."

Now reads: "...minimum bend..."

In the first paragraph of the sidebar, in the sixth line, deleted "one vendor's set of" from the sentence.

"silicon caulk...."

NOW READS:
"silicone caulk...."

BNC stands for Bayonet-Neill-Concelman, the last names of the people
who designed the crafty little thing.

I have found this explanation in the newsgroup comp.dcomp.cabling
under subject "Re: What does SMA and ST stand for?" sent by
Philip Kim, pkim@cts.com.

Note from the Author or Editor:
fixed in 2nd ed ms

Change "names of two designers of coaxial connectors" to "names of two
designers of coaxial connectors, Paul Neill and Carl Concelman."

Note from the Author or Editor:
fixed in 2nd ed ms

The BNC entry did read: "...Bayonet Neil-Concelman..." Now reads: "...Bayonet Neill-Concelman..."

The third line of the MII entry did read: "...attach 802.3 interfaces (MACs) to..."

Now reads: "...attach 802.3 interfaces to..."

The glossary entry for "PHY" HAS BEEN MOVED so that it occurs between "Phase Jitter" and "Physical Address." The entry for "Receive Collision" HAS BEEN MOVED so that it occurs between "Protocol" and "Repeater."

"100BASE-T4, 18, 81"

The entry for "10BROAD36" did read: "10BROAD36, 16"

Now reads: "10BROAD36, 16, 81"