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All revved up

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John.D'Ambrosia
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re: All revved up
John.D'Ambrosia   2/15/2011 2:29:18 PM
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Kris, I did not mean to imply this. The reality is that to support the higher port capacities for line rate 40G and 100G front panel I/O, backplane capacities will need to increase. This will drive the jump from 10G to 25G.

krisi
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krisi   2/14/2011 9:02:53 PM
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thank you John, I presume that your answers means that there is a battle in the marketplace between people who can do 10x10 only for now and those who can do 4x25...which companies are on which side? Kris

John.D'Ambrosia
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re: All revved up
John.D'Ambrosia   2/10/2011 3:27:39 AM
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Kris, It wasn't that long ago that 10G was "bloody expensive circuitry" and people were skeptical of it. However, industry involvement and investment has now made it a reality. Simply put, if we are to support the densities that end users are looking at, we will need to increase the speeds and feeds inside the box. Some argue that you don't need 4x25 at the board edge, however, if you look at a simple chip and consider the number of I/O it takes to get in and out, the simple mathematics of 8 pair for 4x25 versus the 20 pair for 10x10 start to add up. Then consider the backplane. You have to consider the entire system.

krisi
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krisi   2/9/2011 4:55:20 PM
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John: what's your take on 4x25 vs 10x10? Personally I am very skeptical about 25 Gb/s IOs, this must be bloody expensive circuitry...dr Kris

John.D'Ambrosia
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John.D'Ambrosia   2/9/2011 3:38:36 AM
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High density 10G port counts per line cards as well as future 100G blade servers

rick merritt
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rick merritt   2/8/2011 1:18:41 AM
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What will drive demand for 100G backplanes?

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