Tunisia Experiences BGP Disruption Lasting Over Four Hours

Tunisia experienced a series of disruptions to its internet routing infrastructure on Tuesday. The control plane anomalies, affecting the BGP signal, occurred in three distinct periods between 20:15 and 00:30 UTC, with the most significant event lasting approximately two hours.

Technical Details

The overall disruption severity score was 530. The BGP signal, which measures the visibility of network prefixes in the global routing table, recorded a peak severity score of 430 during the final and longest event from 22:30 to 00:30 UTC. The total duration of observed anomalies was 4.3 hours.

Other network signals showed concurrent deviations. The ping-slash24 signal, measuring ICMP reachability across IPv4 address blocks, recorded an 18% drop from its peak. The merit-nt backscatter measurement, an aggregate connectivity proxy, showed a 46% drop from its observed peak.

Reported Cause

The cause has not been publicly attributed.

Network conditions were reported as restored by 00:30 UTC.