Reliability of looking glass sites / rviews

Wed Sep 13 09:30:28 UTC 2017

This weekend our uninterruptible power supply became interruptible and we lost all circuits. While I was doing initial debugging of the problem while I waited on site power verification, I noticed that there was still paths being shown in rviews for the circuit that were down. This was over an hour after we went hard down and it took hours before we were back up.

I worked with our providers last night to verify there weren't any hanging static routes, etc... We shut the upstream circuit down and watched the convergence and saw that eventually all the paths disappeared. Given what we saw on Saturday, what would cause route-views to cache the paths that long?  Some looking glass sites only show what they are peered with or at most what their peers are peered with, that's why I've always used route-views.

What looking glass sites other than route-views would people recommend?