Bermuda Experiences Brief BGP Disruption on July 10

Bermuda experienced a brief but notable disruption to its Border Gateway Protocol (BGP) routing on Thursday, July 10. The event began at 12:00 UTC and lasted for approximately 15 minutes, registering a severity score of 31. The disruption was isolated to the network control plane, with data plane connectivity remaining largely unaffected.

Technical Details

The event was characterized by a degradation in the BGP signal, which measures the visibility of a country’s internet prefixes in the global routing table. The median number of visible prefixes from Bermuda dropped by 2% from its peak during the observation window. In contrast, other key connectivity metrics showed no significant deviation. The ping-slash24 signal, which measures ICMP reachability across active IPv4 address blocks, recorded only a minor 6% dip. Traffic volume, as measured by the gtr-norm signal, remained stable, deviating by less than 1% from its expected baseline.

The cause has not been publicly attributed. The disruption was resolved by 12:15 UTC.