Mozambique Experiences Brief BGP Disruption

Mozambique experienced a brief but significant disruption to its internet routing infrastructure on Sunday, July 27. The event, centered on the Border Gateway Protocol (BGP), lasted approximately 15 minutes starting at 19:05 UTC. The disruption resulted in a severity score of 201.

Technical Details

The primary affected signal was BGP, which measures the control plane visibility and stability of internet routing announcements. The median BGP signal recorded a 13% drop from its peak during the observation window from 14:30 to 20:30 UTC. Other network health indicators showed less pronounced changes. The ping-slash24 signal, which measures ICMP reachability across IPv4 /24 prefixes, saw a 4% drop. The merit-nt signal, a proxy for aggregate connectivity, recorded a 38% drop. The gtr-norm signal, which tracks deviation from an expected traffic baseline, fell by 15%.

The cause of the disruption has not been publicly attributed. Connectivity was reported restored shortly after the event concluded.