American Samoa experienced a prolonged disruption to its Border Gateway Protocol (BGP) routing visibility, lasting over three days. The event began on August 26 and concluded in the early hours of August 30, UTC. The disruption was characterized by a significant and sustained drop in the control plane signal used to advertise network prefixes.
Technical Details
The BGP disruption recorded a severity score of 8,307. The event lasted approximately 3.3 days, from 17:35 UTC on August 26 to 00:30 UTC on August 30. The BGP signal, which measures the visibility of network prefixes in the global routing table, remained at a constant low level of 56 measurement points throughout the event, indicating a sustained reduction in advertised routes.
Concurrently, active probing measurements for IPv4 reachability showed a less severe but notable impact. The ping-slash24 signal, which measures ICMP reachability across IPv4 /24 network blocks, recorded an average drop of 21% from its peak performance during the observation period.
Reported Cause
The cause of the multi-day disruption has not been publicly attributed.
Connectivity was reported restored by the end of the observation window.
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