Laos experiences BGP control plane disruption for 21 hours
Laos experienced a significant disruption to its internet routing infrastructure on July 18-19, 2026, affecting the Border Gateway Protocol (BGP) for over 21 hours. The event began at approximately 03:25 UTC on July 18 and concluded around 00:30 UTC on July 19.Technical DetailsThe disruption registered…
Laos experienced a significant disruption to its internet routing infrastructure on July 18-19, 2026, affecting the Border Gateway Protocol (BGP) for over 21 hours. The event began at approximately 03:25 UTC on July 18 and concluded around 00:30 UTC on July 19.
Technical Details
The disruption registered a severity score of 1,372, primarily impacting the BGP control plane. BGP is the protocol that manages how traffic is routed between different networks on the internet. A sustained drop in the BGP signal indicates a reduction in the global visibility of Laos’s network prefixes.
During the event, active probing of IPv4 /24 prefixes showed a minor 7% drop in reachability. The Merit Network Telescope backscatter measurement, an aggregate connectivity proxy, recorded a complete 100% drop from its peak. Traffic volume measurements also showed deviations, with one normalized metric falling 18% below its expected baseline.
Reported Cause
The cause of the disruption has not been publicly attributed.
The disruption was resolved by the end of the observation period.
