Mongolia Experiences Brief BGP Disruption

Mongolia experienced a brief disruption to its internet routing infrastructure on Tuesday, August 4. The event, centered on the Border Gateway Protocol (BGP), lasted just over an hour starting at 18:30 UTC. A severity score of 73 was recorded for the BGP control plane during the incident.

Technical Details

The disruption was observed between 18:30 and 19:35 UTC. The primary affected signal was the BGP median, which measures the control plane visibility of the country’s internet prefixes. The signal recorded a severity score of 73. Other network health indicators, including active probing for IPv4 reachability and backscatter traffic measurements, showed minor concurrent fluctuations but no major degradation. The cause has not been publicly attributed.

Connectivity was reported restored by 19:35 UTC.