Maintenance edge1.ntt-esch.fra1.eth-services.de
The maintenance has been completed. The root cause of the interface flap remains under investigation.
Applying the update itself should not cause interface flaps, so this behaviour was unexpected. Our workflow was designed to minimize downtime for BGP customers and has been used successfully in previous maintenance windows. Based on current findings, the issue is likely caused by a bug in the pre-upgrade Junos version, as we were able to reproduce it during a second update (without customer impact).
To prevent this in the future, we will adjust our upgrade workflow to shut down traffic earlier in the process.
The maintenance will remain marked as “In Progress” on the status page for better visibility, as it would otherwise no longer be displayed.
During the firmware upgrade, one interface bundle flapped unexpectedly before the sessions had been shut down, causing a brief traffic disruption. The device has since been removed from production traffic, and the maintenance will continue as planned. We apologize for any inconvenience caused.