Outage in Simwood
Routing instability via Cogent in Slough
Resolved Minor
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Outage Details
Customers connecting to our services in Slough over Cogent transit may have seen instability over the last 15 minutes or so. We have temporarily shutdown sessions with Cogent to alleviate any issues.
Those on-net or reaching us over peering sessions (which is the majority) and other ultimate transit providers, or reaching other availability zones over Cogent have been unaffected.
We strongly encourage all customers to connect into us directly wherever possible.
Components affected
Simwood SloughLatest Updates ( sorted recent to last )
RESOLVED
13 days ago - at 06/21/2025 09:43AM
This incident has been resolved.
MONITORING
14 days ago - at 06/20/2025 01:22PM
Cogent have confirmed issues on their network. Our sessions with them remain shut down to prevent impact. We will continue monitoring and will only reintroduce routes for Cogent in Slough once we are confident their network is stable.
INVESTIGATING
14 days ago - at 06/20/2025 12:41PM
Customers connecting to our services in Slough over Cogent transit may have seen instability over the last 15 minutes or so. We have temporarily shutdown sessions with Cogent to alleviate any issues.
Those on-net or reaching us over peering sessions (which is the majority) and other ultimate transit providers, or reaching other availability zones over Cogent have been unaffected.
We strongly encourage all customers to connect into us directly wherever possible.
Latest Simwood outages
London: Reduced fibre network redundancy - about 1 month ago
Slough AZ – At-Risk Advisory (Power Maintenance) - about 2 months ago
Reduced network redundancy in Manchester availability zone - 9 months ago
At risk - London Availability Zone - about 1 year ago
London SIP edge - about 3 years ago
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