10 Gigabit Ethernet

related topics
{system, computer, user}
{rate, high, increase}
{law, state, case}
{@card@, make, design}
{line, north, south}
{group, member, jewish}
{math, energy, light}

The 10 gigabit Ethernet (10GE or 10GbE or 10 GigE) standard was first published in 2002 as IEEE Std 802.3ae-2002. It defines a version of Ethernet with a nominal data rate of 10 Gbit/s, ten times as fast as gigabit Ethernet.

10 gigabit Ethernet supports only full duplex links which can be connected by switches. Half duplex operation and CSMA/CD (carrier sense multiple access with collision detection) are not supported in 10GbE.

The 10 gigabit Ethernet standard encompasses a number of different physical layer (PHY) standards. As of November 2010, 10 gigabit Ethernet is still an emerging technology with only 1 million ports shipped in 2007,[citation needed] and it remains to be seen which of the PHYs will gain widespread commercial acceptance. A networking device may support different PHY types by means of pluggable PHY modules.

At the time the 10 gigabit Ethernet standard was developed there was much interest in 10GbE as a WAN transport and this led to the introduction of the concept of the WAN PHY for 10GbE. This operates at a slightly slower data-rate than the LAN PHY and adds some extra encapsulation. The WAN PHY and LAN PHY are specified to share the same PMDs (physical medium dependent) so 10GBASE-LR and 10GBASE-LW can use the same optics. In terms of number of ports shipped the LAN PHY greatly outsells the WAN PHY.


Full article ▸

related documents
Amstrad CPC
Quality of service
Commodore 1541
Computer multitasking
Mandriva Linux
Reduced instruction set computer
Universal asynchronous receiver/transmitter
Session Initiation Protocol
Direct Connect (file sharing)
Set-top box
Digital Enhanced Cordless Telecommunications
X Window System
X10 (industry standard)
Microsoft Windows
Genera (operating system)
Pulse-code modulation
Virtual memory
Flip-flop (electronics)
Visual display unit
IEEE 802.11