Reason for Outage (RFO): Network Connectivity Incident – 5 February 2026

Reason for Outage (RFO)

Date: 5th February 2026
Outage Time: 16:00–16:40
Location: Blynx AIM Ltd – Saxon House Data Centre
Affected Services: IP connectivity for IP ranges originating via legacy Juniper network

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Summary

A network outage occurred due to a broadcast storm originating from legacy Juniper network equipment inherited from Safe Hosts Internet LLP. The storm interfered with BGP sessions between the legacy Juniper network and the new Arista network, causing multiple IP ranges to become unreachable.

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Timeline (GMT)
• 15:45 – A configuration change was applied to an internal device and tested successfully
• 16:00 – Network monitoring alerts triggered for connectivity issues on several systems
• 16:05 – Engineers began investigation; recent changes were reverted
• 16:15 – Network services had not recovered following the rollback
• 16:20 – A second engineer joined the investigation and was briefed
• 16:24 – A broadcast storm was identified originating from the legacy Juniper network and traversing into the Arista network
• 16:28 – Corrective changes were applied; the broadcast storm began to subside
• 16:35 – BGP sessions between the Juniper and Arista networks stabilised and affected IP ranges were re-announced
• 16:40 – All network operations confirmed fully restored

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Root Cause

A broadcast storm generated within the legacy Juniper network propagated into the new Arista network. This caused disruption to BGP sessions responsible for announcing IP ranges that still originated from the Juniper infrastructure, resulting in loss of external connectivity for those IPs.

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Resolution
• Broadcast storm source identified and isolated
• Corrective configuration applied to stop propagation into the Arista network
• BGP sessions recovered and IP announcements restored
• Network stability fully confirmed

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Preventative Actions / Future Remediation
• The legacy Juniper network is already largely decommissioned
• A formal status update will be issued confirming that during the weekend of 7–8 March, the remaining Juniper network routers will be fully removed
• Connections currently terminating on the Juniper routers will be redirected directly to the Arista equipment, removing an unnecessary layer of complexity and legacy configuration that has contributed to network issues over the past 8–12 months
• Complete removal will eliminate remaining interoperability risks and legacy-related issues
• All core and high-level routing functions will then be handled largely by the Arista platform, which is designed to support:
• Multi-terabit transit capacity
• Up to 400 Gbit/s internal network connectivity

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Closing Statement

We apologise for any disruption caused and thank customers for their patience. Blynx AIM Ltd has been working continuously to resolve legacy infrastructure issues inherited from Safe Hosts Internet LLP. This incident relates to the final components of the old Juniper network, which is now scheduled for complete removal, ensuring a more resilient, higher-capacity network moving forward.

Engineers continue to monitor the network closely and remain on standby should any further issues arise.

Kind Regars
NOC Team
Blynx AIM Ltd.

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