IEEE 40GE & 100GE

Owen DeLong owen at
Thu Dec 13 22:50:34 UTC 2007

So, assuming this translates roughly to optics being:

	$1,000			 4km
	$1,300			10km
	$2,600			40km

You'd rather have to pay $2,600 for all your campus links than
$1,300 for all your LAN links?

My preference would be quite different.  I'd much rather pay $1,300 for
the LAN links than $2,600 for the Campus links.


On Dec 13, 2007, at 1:51 PM, Stephen Sprunk wrote:

> Thus spake "Chris Cole" <chris.cole at>
>> The 40km/10km cost ratio is between 1.6x and 2x, depending on
>> the source.
>> The 10km/4km cost ratio is between 1.15x and 1.3x, again
>> depending on the source.
> If those numbers translate into prices (not costs), then I'd prefer  
> to see 40km and 4km optics, with no 10km optics.  The important  
> point is that the 40km optics neet to be able to handle 4.1km links  
> with no attenuators, preferably without any human tuning at all.   
> You only pay the extra capital cost once (if there even is any, due  
> to more volume of fewer parts), but you pay labor and sparing over  
> and over.
> S
> Stephen Sprunk         "God does not play dice."  --Albert Einstein
> CCIE #3723         "God is an inveterate gambler, and He throws the
> K5SSS        dice at every possible opportunity." --Stephen Hawking

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