Next generation Ethernet
products will be available by 2010
40 and 100 Gigabit Ethernet products are now expected in 2010 to
mark the planned ratification of a new IEEE standard.
Early deployment for higher speed
Ethernet is anticipated in metropolitan core networks, Internet
exchanges, high performance computing, data centres and enterprise
One of the main drivers for higher
speed is anticipated to be IP rich media applications, primarily
video. IEEE802.3ba will define operation over singlemode fibre to at
least 10km and multimode fibre to 100m.
Screened copper cable will support
links up to 10m, and a 40 Gigabit Ethernet copper backplane will
also be included.
Technical approaches have been
adopted for all implementations. Singlemode solutions will use WDM
technologies; 100 Gigabit Ethernet will have four densely spaced
lanes at 25 gigabits per lane, and 40 Gigabit Ethernet will have
four widely spaced lanes at 10 gigabit per lane. Multimode and
copper cable solutions will use parallel lanes with 10 gigabit per
lane which, for full duplex operation, will require an eight lane
cable for 40 Gigabit Ethernet and a 20 lane cable for 100 Gigabit
Parallel cable assemblies are
expected to be used in the data centre and multi-way connectors will
also be specified for these links.
When asked to comment on the impact of this latest IEEE initiative,
Alan Flatman of LAN Technologies, said, 'Next generation Ethernet
products will arrive a lot sooner than many people think. Cabling
requirements will be very different to the majority of existing
installations, notably in the data centre, and consequently decision
makers will need to give some careful thought to media choices for
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