Simwood incident

Routing instability via Cogent in Slough

Minor Resolved View vendor source →

Simwood experienced a minor incident on June 20, 2025 affecting Slough, lasting 21h 1m. The incident has been resolved; the full update timeline is below.

Started
Jun 20, 2025, 12:41 PM UTC
Resolved
Jun 21, 2025, 09:43 AM UTC
Duration
21h 1m
Detected by Pingoru
Jun 20, 2025, 12:41 PM UTC

Affected components

Slough

Update timeline

  1. investigating Jun 20, 2025, 12:41 PM UTC

    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.

  2. monitoring Jun 20, 2025, 01:22 PM UTC

    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.

  3. resolved Jun 21, 2025, 09:43 AM UTC

    This incident has been resolved.