A connectivity disruption in American Samoa persisted for more than six days, from August 26 to September 2, primarily affecting the network’s control plane visibility. The event was observed between 18:30 UTC on September 1 and 00:30 UTC on September 2, with a severity score of 15,886.
Technical Details
The disruption was most pronounced in the BGP signal, which measures the control plane visibility for network prefixes. The signal’s median value remained at a constant low level of 56 measurement points throughout the event, indicating a sustained reduction in advertised routes. The severity score for this signal was 15,886.
Active probing for ICMP reachability across IPv4 /24 prefixes showed a more modest impact, with an average of 13.53 measurement points, representing a 14% drop from its observed peak. This signal, known as ping-slash24, measures the reachability of individual network blocks. The cause has not been publicly attributed.
The disruption was reported as resolved by the end of the observation period.
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