Guam Experiences BGP Control Plane Disruption
Guam experienced a disruption to its internet control plane on July 26, 2026, affecting the visibility of network routing information. The event began at 18:50 UTC and lasted approximately 1.7 hours, concluding by 20:30 UTC.Technical DetailsThe disruption registered a severity score of 156, with the…
Guam experienced a disruption to its internet control plane on July 26, 2026, affecting the visibility of network routing information. The event began at 18:50 UTC and lasted approximately 1.7 hours, concluding by 20:30 UTC.
Technical Details
The disruption registered a severity score of 156, with the primary impact observed on the Border Gateway Protocol (BGP) signal. The BGP signal measures the control plane visibility of network prefixes, indicating a reduction in the number of routes being advertised from the territory. The median BGP route count dropped by approximately 2% from its peak during the observation window.
Other network health indicators, including active probing for IPv4 reachability and traffic volume forecasts, showed no significant correlated degradation during the event. The cause has not been publicly attributed.
The disruption was resolved by the end of the observation period.
