Network Performance Degradation - DUS Datacenter
Dusseldorf · EU9.DUS
We are currently investigating reports of network performance degradation affecting some routes in our DUS (Düsseldorf) datacenter. The incident has been escalated to our upstream carrier’s NOC, and their engineers are working to identify and resolve the issue. Our internal network monitoring confirms intermittent packet loss and increased latency for some destinations. All other datacenters and services remain fully operational. We will provide updates as soon as new information becomes available.
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Event history
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Published
We are currently investigating reports of network performance degradation affecting some routes in our DUS (Düsseldorf) datacenter. The incident has been escalated to our upstream carrier’s NOC, and their engineers are working to identify and resolve the issue. Our internal network monitoring confirms intermittent packet loss and increased latency for some destinations. All other datacenters and services remain fully operational. We will provide updates as soon as new information becomes available.
Update · Identified
Our investigation indicates that the issue may be caused by a malformed BGP attribute received during a global routing table update. This attribute triggers an exception in Juniper’s BGPv4 stack, resulting in an abnormal restart of the BGP peering process and intermittent routing instability. Our network engineering team is actively working on mitigation using available configuration procedures. Please note that IPv6 connectivity and related services remain unaffected. We will continue to monitor the situation closely and provide further updates as we progress.
Exact time unavailable in the original archiveUpdate · Identified
Configuration adjustments applied earlier were not sufficient to fully mitigate the issue caused by the malformed BGP attribute. Routing instability may still occur on certain IPv4 paths. As the next step, our network operations team will perform an emergency operating system update on core routers in the DUS datacenter to address this vulnerability and restore stable network performance. Service impact is expected to remain limited and brief during the update procedure. IPv6 connectivity and related services continue to operate normally after brief pause. Further updates will follow once the upgrade process is complete.
Exact time unavailable in the original archiveUpdate · Fixed
We have successfully completed the emergency software upgrade for our router farm in the DUS datacenter. The update has resolved the BGP-related issue, and all network performance metrics have returned to normal. Our network operations team continues to closely monitor the situation to ensure full stability across all routes. Thank you for your patience and understanding during this incident.
Exact time unavailable in the original archive