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RichQ
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Re: Fast track, define it?
RichQ   7/1/2013 12:52:09 AM
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For the 40G/100G standard, the PAR was approved in late 2007, and the standard ratified in mid 2010. So, about two and a half years. 100G switching units are only selling in small numbers today, three years later.

Some of that may have been the economy throttling capital investment. But to some extent it might also be because streaming media (a big consumer of bandwidth) wasn't so popular back in 2010. All that is changing and the pace is sure to pick up.

As to what is fast track, the bandwidth study indicated that 400G would be needed by 2015. I would say that two years to get a standard and first products out would be the fast track.

RichQ
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Re: That's a lot of data
RichQ   7/1/2013 12:42:33 AM
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Yes, it's a lot of data. A lot of it is on optical going any kind of distance, but inside the central offices wired Ethernet is also used. 40G PHYs for copper are for the 1 to 10m range, so rack to rack. I think 100G is strictly optical, but not certain.

kfield
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Fast track, define it?
kfield   6/30/2013 9:02:44 PM
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My opinioin is that we better get the hell on it as quickly as possible. But how do you define fast track? What's the normal timeframe and process to establish standards? What are the obstacles to speeding up the process?

Duane Benson
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That's a lot of data
Duane Benson   6/30/2013 7:41:36 PM
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That's a staggering amount of data flowing around there. Is that all optical or are there wired systems capable of some of those data rates? I haven't paid a lot of attention to the newer generations Ethernet standards, so I'm not really sure where the cut over from copper to fiber occurs.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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