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VIRTUALISATION To improve broadband speeds, don't fiberise, optimise
VIRTUALISATION To improve broadband speeds, don't fiberise, optimise | To improve broadband speeds, don't fiberise, optimise |
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| by Stuart Corner | |
| Wednesday, 26 August 2009 | |
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"The government is making this promise of blindingly fast speed and there will be an awful lot of services that will see no improvement at all, so there could be a huge backlash." "If the government were thinking intelligently instead of rolling out fibre for the next 10 years they should be saying 'let us look at this intelligently and maybe the deployment of optimisation products would meet the objectives they want and the could do it very quickly." According to Dixon, latency combined with the very high level of dialogue inherent in Internet protocol traffic - and in many applications that operate over wide area networks - combine to restrict throughput to a fraction of the available bandwidth. "If you have a link between Sydney and Brisbane you will have latency because of the distance, because of the tail ends and because of all the pieces of equipment the data has to go through. That latency will have a direct impact on performance. To achieve anything on that link requires data to make hundreds of thousands of round trips. The way TCP works is to send a bit wait for acknowledgement and then send a bit more. "In an extreme case, if data were sent in 16 kilobit blocks and the round trip time was one second then no matter how fat the pipe throughput would be only 16 kilobits per second."
This article first appeared in ExchangeDaily, iTWire's daily newsletter for telecommunications professionals. Register here for your free trial.
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