We faced a downtime of a few minutes on several services. It seems that the impact is worldwide and not related to one of our direct suppliers.
Following https://noc.worldstream.nl/ we have the explanation.
Due to a configuration error on one of the core routers, all routes were briefly announced to all our peers.
As a result, more traffic than expected was pulled, leading to congestion on some paths.
To address this, a temporarily shut down of these BGP sessions was set to locate the issue and stabilize the network.
All the services are back. We are investigating about the source to prepare a public report.
