Iran Experiences Two-Hour BGP Control Plane Disruption

Iran’s internet connectivity experienced a two-hour disruption to its control plane on Tuesday, July 29. The event began at 21:05 UTC and concluded by 23:05 UTC, registering a severity score of 228. The primary technical impact was observed on the Border Gateway Protocol (BGP), which governs how networks announce and route traffic.

Technical Details

The disruption was confined to the BGP control plane. The BGP signal, which measures the visibility of network routing announcements, recorded a median drop of 2% from its peak during the observation window. Other key connectivity signals, including active probing for IPv4 reachability (ping-slash24) and traffic volume (gtr-norm), showed minor fluctuations but no significant correlated outages. The cause has not been publicly attributed.

Network connectivity was reported restored following the two-hour event.