User:Itpastorn/dko/ccna1-3.1-7

Ethernet Technologies

Overview CCNA 1 - Module 7 (3.1)
 * 10BASE5, 10BASE2, and 10BASE-T Ethernet
 * Manchester encoding
 * Ethernet timing limits
 * 10BASE-T wiring parameters
 * 100-Mbps Ethernet
 * The evolution of Ethernet
 * Explain the MAC methods, frame formats, and transmission process of Gigabit Ethernet
 * Specific media and encoding with Gigabit Ethernet
 * Pinouts and wiring typical to the various implementations of Gigabit Ethernet
 * Describe the similarities and differences between Gigabit and 10 Gigabit Ethernet
 * Describe the basic architectural considerations of Gigabit and 10 Gigabit Ethernet

10-Mbps and 100-Mbps Ethernet
Ethernet physical layer (all speeds)

10-Gigabit Ethernet
MAN and WAN capable.


 * IEEE 802.3 sublayers are mostly preserved (a few additions for 40 km fiber links and interoperability with SONET/SDH technologies)
 * TCP/IP can run over LANs, MANs, and WANs with one Layer 2 transport method

802.3ae-family:
 * 10GBASE-SR
 * short distances
 * already-installed multimode fiber
 * 26 meters to 82 meters


 * 10GBASE-LX4
 * Wavelength division multiplexing (WDM)
 * 240 m to 300 m over already-installed multimode fiber
 * 10 km over single-mode fiber


 * 10GBASE-LR and 10GBASE-ER
 * Support 10 km and 40 km over single-mode fiber


 * 10GBASE-W (10GBASE-SW, 10GBASE-LW, and 10GBASE-EW)
 * Intended for use with OC-192 SONET/SDH

10-Gigabit Ethernet architectures
Half duplex is explicitly forbidden!

Future of Ethernet
It has won on the LAN over all other technologies. It will get faster - and faster - and faster...

Quality of service was deemed impossible, but it is has proved itself not to be. ATM is becoming redundant and both IP Telephony and Video multicast is perfectly possible over Ethernet today.

Extra topics (in addition to CCNA)

 * 100 Gigabit Ethernet

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