On Tue, 15 Jan 2019 at 19:01, Vanbever Laurent <lvanbe...@ethz.ch> wrote: > > Hi NANOG, > > Networks evolve in uncertain environments. Links and devices randomly fail; > external BGP announcements unpredictably appear/disappear leading to > unforeseen traffic shifts; traffic demands vary, etc. Reasoning about network > behaviors under such uncertainties is hard and yet essential to ensure > Service Level Agreements. > > We're reaching out to the NANOG community as we (researchers) are trying to > better understand the practical requirements behind "probabilistic" network > reasoning. Some of our questions include: Are uncertain behaviors > problematic? Do you care about such things at all? Are you already using > tools to ensure the compliance of your network design under uncertainty? Are > there any good? > > We designed a short anonymous survey to collect operators answers. It is > composed of 14 optional questions, most of which (13/14) are closed-ended. It > should take less than 10 minutes to complete. We expect the findings to help > the research community in designing more powerful network analysis tools. > Among others, we intend to present the aggregate results in a scientific > article later this year. > > It would be *terrific* if you could help us out! > > Survey URL: https://goo.gl/forms/HdYNp3DkKkeEcexs2 > > Thanks much! > > Laurent Vanbever, ETH Zürich > > > PS: It goes without saying that we would also be extremely grateful if you > could forward this email to any operator you know and who may not read NANOG.
Hi Laurent, I have filled out the survey however, I would just like to request that in the future you don't use a URL shortner like goo.gl; many people don't like those because we can't see were you're sending us until we click that link. Some people also block them because they are a security issue (our corporate proxy does, I have to drop off the VPN or use a URL expander to retrieve the original URL). Also have you seen Batfish? I looks like you guys want to write a tool that has some overlap with Batfish. Batfish can ingest the configs from my network and answer questions such as "can host A can reach host B?" or "will prefix advertisement P from host A will be filtered/accepted by host B?", "if I ping from this source IP who has a return route and can respond?" etc. Kind regards, James.
