Currently AMS-IX is having major issues as their graph bottomed out and we also started noticing issues with BGP sessions flapping every 20 seconds or so.

Until we get an explanation and the OK from the AMS-IX team we've shut all our BGP sessions with AMS-IX.

We will update this post with more information later on.

Update 11:30:
We received the following from the AMS-IX:

We are experiencing an increased amount of BUM traffic on the platform as well as several down BGP sessions. We are investigating the problem, and we will update you as soon as possible.

Update 14:00:
While we are still awaiting an official RFO we've enabled the sessions again after it has been stable for the last couple of hours.