By Gilbert Held
This e-book is a complete scam. i assumed Artech released complicated technical books. This booklet is a comic story in terms of pertaining to the identify to the content material. it's is commit of something concerning provider Ethernet. it's like a primer for Ethernet. don't WASTE YOUR funds in this bad BOOK!!
As anyone who has labored designing Ethernet gear i discovered the data during this booklet very susceptible. Chapters in regards to the heritage of Ethernet and Ethernet body codecs are not worthy spending $80 on. This writer can be ashamed to have ebook his identify in this awful ebook.
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Additional resources for Carrier Ethernet: Providing the Need for Speed
In comparison, although the long haul portion of WANs has been based upon the use of fiber since the late 1970s, the access line to the communications carrier’s central office more often than not is a copper line. Thus, unless a fiber cable can be run directly into a building the highest data rate obtainable is limited to approximately 50 Mbps when VDSL (Veryhigh-data-rate DSL) is used on the copper access line. In comparison, when a fiber connection is available for the access line, it is possible to use a switch or router port to maintain the LAN operating rate on the WAN.
Prior to the turn of the century we could define a short distance in terms of hundreds of meters for a single LAN or several thousand meters when LANs were bridged to extend their transmission distance. Since the turn of the century Ethernet LANs in the form of Gigabit and 10 Gigabit Ethernet that primarily use fiber-optic cable provide transmission distances up to 70 km. Thus, with the use of Gigabit Ethernet and 10 Gigabit Ethernet the “local” (from the term “LAN”) may be obsolete as the network is capable of supporting transmission over a large metropolitan area.
Although not yet standardized, PMC-Sierra and other vendors have announced 10 GbE chipsets. Thus, in a few years we can expect a majority of Ethernet NICs will actually be fabricated as chips installed on the motherboard of different communications devices. Hubs The initial version of Ethernet used a coaxial cable bus-based structure that defined the minimum and maximum distances where stations could be attached to the media. The IEEE standardized this version of Ethernet as 10BASE-5. Later another version of Ethernet that used a thin version of coaxial cable was standardized as 10BASE-2.
Carrier Ethernet: Providing the Need for Speed by Gilbert Held