Syria Experiences Border Gateway Protocol Disruption

Syria experienced a two-hour Border Gateway Protocol (BGP) disruption on Monday, affecting the control plane visibility of its internet prefixes. The event began at 10:30 UTC and concluded by 12:30 UTC.

Technical Details

The disruption registered a severity score of 165. The primary affected signal was BGP, which measures the routing control plane visibility for the country’s network prefixes. The BGP signal recorded a drop in the median number of visible prefixes, with a peak decline magnitude of approximately 1%.

Other network signals showed varying levels of activity during the observation window. The ping-slash24 signal, which measures ICMP reachability across IPv4 /24 prefixes, showed a peak decline of 17%. The gtr-norm signal, a forecast deviation from expected traffic baseline, showed a 20% drop from its peak. The merit-nt signal, a backscatter measurement that serves as a proxy for aggregate connectivity, recorded a 35% decline from its peak value.

The cause has not been publicly attributed.

Connectivity was reported restored by the end of the observation period.