> They use something very different for routing.

Then what is their algorithm?

> An aproach based on map-reduce that works very well
> for their scale but does not scale down to anything below
> 1 datacenter. ;)

I wouldn't bet on Google not knowing the latest research.

>> I have the idea routing algos sometimes take too much roads of no
>> importance, and arrive where the traffic shouldn't come.
>
> what routers with what routing-algorithms, target-metric
> and parameters did you use?
>
> the shortest route for example will almost always
> use roads of low importance as anything else will just
> not be the shortest route.

Some would argue that the roads with highest importance tend to lie on  
many shortest paths, i.e. the important highway was built for a  
reason. Or how do you define importance?

--Dennis

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