Link11 had 17 outages in the last 2 years totaling 311h 32m of downtime — averaging 0.7 incidents per month.
There were 17 Link11 outages since August 5, 2025 totaling 311h 32m of downtime. Each is summarised below — incident details, duration, and resolution information.
We are currently investigating an elevated rate of timeout errors affecting European regions, observed on traffic from the Link11 Cloud to customer backends.
We are continuing to investigate this issue.
This incident has been resolved.
We are currently investigating a potential issue that may be impacting service availability or performance. Our team is working to identify the cause and will provide updates as soon as more informaton is available.
At approximately 11:20 CET, the Link11 Singapore node experienced a high traffic condition as a result of multiple attacks against the Link11 customer base. Link11 was able to mitigate the majority of the attack; however a portion of the attack was able to saturate a backbone segment that was used by the WAAP platform for internal process communication, resulting in slow poxy responses. This intermittent saturation occurred from 11:20 to 13:30 CET before NetOPS were able to optimize routing.
We are continuing to monitor for any further issues.
We are continuing to monitor for any further issues.
We are currently experiencing an elevated rate of error messages across our monitoring systems. Connectivity to multiple sites appears to be interrupted. Our engineering team is actively investigating the issue and working to identify the root cause. We will provide a further update as soon as we have more information. We apologize for any inconvenience this may cause.
A fix has been deployed. A recent change to our load balancer configuration has been reverted and connectivity should resume promptly. We are continuing to monitor all systems to confirm full recovery.
A fix has been implemented and we are monitoring the results.
We are continuing to monitor for any further issues.
This incident has been resolved. All operations have been fully restored, and our systems are performing normally. The root cause was identified as a load balancer configuration change which has been reverted. We thank you for your patience and apologize for any disruption caused.
We are currently experiencing connectivity issues at our Miami site affecting GRE tunnels terminated in this location. Link11 is actively working with its transport providers to restore services as quickly as possible. We will provide further updates as soon as more information becomes available.
Cogent has restored data transport service on one of the affected lines, and the Miami site and associated services are now reachable. We are continuing to monitor the situation to ensure stability while work continues to fully restore redundancy. A further update will follow once services are confirmed fully restored.
The Miami site and associated services remain reachable via the restored line. However, not all transport lines have been restored yet, so the site is currently operating without full redundancy. Link11 is continuing to work with the transport provider to bring the remaining lines back into service. We will provide a further update once full redundancy has been restored.
We are currently investigating a potential issue that may be impacting service availability or performance. Our team is working to identify the cause and will provide updates as soon as more information is available. Affected Products: • Cloud Insights / Network DDoS Detector ⚠️ Restoring full service is our highest priority. Our teams are fully engaged, and we will share further updates here as new information becomes available. Thank you for your understanding and trust.
We have identified the root cause of the issue and are actively working on a solution. Further updates will be provided as progress is made.
A fix has been implemented and services are currently stable. We are closely monitoring the system to ensure continued stability and will mark this incident as resolved once we confirm full recovery.
The issue has been resolved and all services are operating normally. We will continue to monitor and have initiated a full post-incident review to prevent recurrence. Post-incident details, including the Root Cause Analysis (RCA) and the Post-Incident Improvement Plan (PIIP), are available upon request via Link11 Support or your designated account contact.
We would like to inform you that our teams are currently investigating a potential intermittent issue on some of the proxies in LN network within our DSS2(DOSarrest platform). Our engineering and operations teams are actively analyzing the situation, and we will provide further updates as soon as additional details become available. We appreciate your understanding and will share more information as soon as we have it. If you have any questions or notice unexpected behavior, please contact our Support team.
The issue has been identified and a fix is being implemented.
This incident has been resolved.
We would like to inform you that our teams are currently investigating a potential issue within our infrastructure. At this stage, we have not identified any confirmed impact on service performance or availability. This message is being shared proactively to keep you fully informed. Our engineering and operations teams are actively analyzing the situation, and we will provide further updates as soon as additional details become available. Please note: -Your services may not be affected, and if any impact occurs, we currently expect it to be minimal. -We are informing you early to ensure full transparency while our investigation is ongoing. -No action is required from your side at this moment. We appreciate your understanding and will share more information as soon as we have it. If you have any questions or notice unexpected behavior, please contact our Support team.
We temporarily disabled the environment responsible for the recent connectivity issues, implemented a fix, and have since re-enabled it. Since doing so, we have not observed any further issues, and overall connectivity remains stable. Our teams continue to monitor the situation closely to ensure ongoing reliability and quickly address any anomalies that may arise. Thank you for your patience and understanding while we worked to resolve this.
Restarting the affected network services resolved the immediate issue and service has been confirmed stabilized. Nevertheless, at this point in time, the exact trigger is not yet confirmed. Our team is actively investigating contributing factors and implementing additional monitoring and safeguards to react once needed.
We are currently investigating networking issues within the Link11 Backbone that are affecting multiple customers across different services. The impact may include partial packet loss, slow responses, or intermittent unavailability. At this stage, it is not yet clear which services are affected or whether the issue originates within the Link11 network or with external connectivity providers. Our engineering teams are actively analyzing the situation and working to restore stable connectivity as quickly as possible. We will provide further updates as soon as new information becomes available. Thank you for your patience and understanding.
We have isolated the environment responsible for the recent connectivity issues and implemented a bypass to route traffic away from the affected segment. With this change in place, overall connectivity has significantly improved, and the previously observed disruptions should now be largely reduced or no longer present. Our teams continue to monitor the situation closely to ensure stability and identify any remaining anomalies. Thank you for your patience and understanding while we are working on this.
The connectivity issues impacting parts of the Link11 Backbone have been fully resolved. Following our previous mitigation steps, our engineering teams deployed a permanent fix to the affected systems. After implementing and verifying the correction, the systems were successfully brought back into production and reintegrated into our infrastructure. All components have been running stable since 06:30 UTC, and no further anomalies have been observed. We continue to monitor the platform closely, but no additional impact is expected. Thank you for your patience and cooperation throughout this incident.
We are currently experiencing an issue with one of our 10G linecard in our Zurich location. The issue is related to an FPC, which has affected associated filters. To mitigate customer impact, traffic has been proactively bypassed around the affected filters. We continue to investigate the root cause and are working toward a permanent resolution.
We are currently experiencing a temporary service disruption in our Zurich location. Customers connected via our Zurich POP area may experience temporary service disruption. Our engineering team is actively monitoring the situation and working to bring all services back to full capacity as quickly as possible.
We are continuing to investigate this issue.
Following the technician’s investigation at the Data Center, we were unable to repair the linecard. A replacement is scheduled for tomorrow, and we will provide updates once the replacement is completed. Thank you for your patience and understanding.
We are continuing to investigate this issue.
Our technician has arrived at the Frankfurt site and collected the replacement card. They are now en route to Zurich, Switzerland. Next update: ETA approximately 5 hours.
This incident has been resolved.
Link11 experienced an issue within the NetFlow processing system that led to possible false positive attack‑mode triggers at 15:15 UTC across several customer environments on the DDoS infrastructure platform. The underlying issue has been resolved, and all systems are operating normally again. We are continuing to investigate the root cause and will share a detailed RCA as soon as the analysis is completed.
We have observed issues with triggering attack mode based on NetFlow limits. Our team is actively investigating and working on a resolution. We will provide further updates as soon as more information becomes available. All other protection mechanisms remain fully operational and unaffected.
The issue has been resolved. This was limited to an internal logging issue and did not affect customers or protection.
Between 13:52 CET (12:52 UTC) and 13:56 CET (12:56 UTC), we observed a brief period of degraded network performance at our FFM‑7 location, which may have impacted all products and services. The issue has since been resolved, and traffic levels have returned to normal. Our teams are continuing to investigate the root cause with the highest priority. Further updates will be provided as soon as more information becomes available.
This incident has been resolved.
We are currently experiencing an issue affecting our reporting systems. All protection mechanisms remain fully operational. Our team is actively investigating the matter. In exceptional cases or if there is any uncertainty, please contact [email protected]. Our support team can perform an individual review to confirm whether mitigation occurred during a specific timeframe. Thank you for your understanding and patience as we work to resolve this issue.
This incident has been resolved. Thank you for your understanding and patience.
We apologize for the inconvenience. We had a partial outage to our ddosproxy, alarming (attack notifications) and bot mitigation to limited number of domains from 13:53 CET until 14:23 CET. We are currently investigating the cause of the problem.
This incident has been resolved.
Dear valued customer, Link11 has detected some issues with Bot management mitigation process. On a limited set of customers, the "Bot management" is working only in detection mode, with no active mitigation. Our team is currently working on this problem. If you have any further questions, write to us at [email protected]
Dear valued customer, It was a false alert regarding the mitigation, it was never impacted, there was an issue with displaying the data. It is fixed now.
Dear valued customer, Link11 has encountered an unusual outage which might have affected your service. Description and possible impact: We are currently experiencing a disruption on the backbone connection between Frankfurt and London. This issue may impact production traffic in general. Our network operations team is actively investigating and taking measures to mitigate any potential service effects. Incident start: October 21, 2025 – 07:05 CEST In the unlikely case that the issue is not resolved immediately, you receive regular updates with relevant details as soon as the situation develops. If you have any further questions, write to us at [email protected]
Issue was resolved.
Our DDOS proxies are continuously restarting due to an issue with HTTP/2, affecting only certain instances. HTTP/2 will be disabled temporarily for affected customers until we identify and resolve the root cause
The issue has been resolved and the fix is being rolled out.