Hi Ed, > The one weakness I see in the presentation of CoDoNS is one that is > common amongst academic exercises. While it treats a technical > problem in a formally defined say, it suffers from the "assume > frictional surfaces" syndrome. This disease is not fatal, it is more > like the flu, meaning that the work is worthwhile and there are some > nuggets of real helpful technology, but taken as one package it is no > better than what is out there today - which does not have to assume > frictionless surfaces. It's certainly true that operationally oriented folks would like to see issues addressed at a different level than academic folks. And this is entirely reasonable; I can see how academic papers or quick email notes would engender that feeling. Just to put things in perspective: - CoDoNS showed how to use a P2P system to serve names, and to do so with high performance. Previously, this was considered impossible because DNS query distributions follow Power Law distributions, and such query distributions were considered to be impossible to handle. There are lots of papers on heuristics-based approaches to managing a name cache that have no guarantee of working, and there is a paper from highly esteemed colleagues at MIT who wrote that serving DNS with a P2P substrate was impossible (which was the state of the art at the time). We showed how to do it. - We rewrote a new DNS implementation based on this new P2P architecture that is backwards compatible with existing resolvers and supports the same namespace as the current DNS. Remember how long the BIND9 effort took, with extensive resources? CoDoNS is a comparable effort, plus it has a P2P organization, plus it has a radically new way of managing cache contents and cache update traffic. By just 2 people total (actually, almost entirely 1 person, my former graduate student, Rama). - We serve some names authoritatively through our system to protect them from DoS, as evidenced by the www.electoral-vote.com effort, where we provided both DNS and CDN services to a site under serious threat of DoS attacks. So, you can say whatever you like about academic research in general, but when it comes to the CoDoNS, we know about friction-bearing surfaces. Best, Gun. _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf