[atlas] Global Traceroute

I wrote front-end to traceroute from the RIPE Atlas probes.  It looks like a standard looking glass — you select a probe by location and AS number, enter a destination, and it does a traceroute.  It’s on the web at https://www.globaltraceroute.com.  If this looks useful, please check it out and tell me what you think.

One of the things I've found frustrating when troubleshooting routing problems was the lack of information about inbound paths.  Various measurement systems would tell me when performance was bad.  Traceroutes from my own network would tell me what path traffic to a destination was taking outbound.  Flow systems would tell me what interface inbound traffic was coming in on, and sometimes what peer it was coming through.  But determining the full path inbound traffic was taking — why users of some ISP in Asia were having their traffic show up at one of my POPs in Europe, for instance, was much more difficult.

I’ve been using looking glasses and commercial performance monitoring systems that allow traceroutes from their probes, but those often weren’t where the end users were.  RIPE Atlas did have probes where a lot of my end users were, so I started configuring one time measurements on RIPE Atlas whenever I needed a traceroute from a simulated end user.  But finding a suitable probe and configuring the measurement was too cumbersome to do when I wasn’t pretty desperate.  This is my attempt to solve that problem.

Thanks,
Steve