
jon@branch.com (Jon Zeeff) wrote
Making routing decisions based on horoscopes doesn't bother me. Making routing decisions based on load is somewhere between silly and scary. If you only cook yourself then it's silly, if you cook others it's scary. In my dusty past I played with a digital simulation of an analog computer, and remember trying to build various damped circuits. Then you hooked up the signal generator, and about 8 times out of 10, some part of the circuit went to rail (this means you blew it.) The idea of positive feedback loops in the internet routing/traffic fabric seems unimaginable for someone who had trouble taming 10 opamps with a known input signal. It's easy to look at what exists and see it is suboptimal. I would venture it is impossible to build an automatic system that would not display catastrohic actions under certain stresses. Jerry

Making routing decisions based on load is somewhere between silly and scary. If
No, it is not, in fact it happens all the time. Yes, anyone who does it should think about oscillation, how quickly they want to allow updates, and what effect it might have on others.
participants (3)
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jon@branch.com
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scharf@vix.com
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Yakov Rekhter