Szabolcs Bodosi at RONOG 10 - Rethinking routing after subsea cable incidents

On 18 September 2025 in Bucharest, Szabolcs Bodosi of RETN gave an opening-plenary at RONOG 10, speaking on “Recent Subsea Cable Disruptions: Rethinking Routing and Network Resilience Across Europe and Asia.” RETN supported the event as a Bronze sponsor.

Szabi outlined that recent faults to undersea systems aren’t just distant news - they change how traffic flows, create congestion and increase latency, and expose gaps in many operators’ routing plans. Rather than abstract theory, his talk focused on practical steps network teams can take today to reduce customer impact when a cable fault happens.

Key takeaways

• Use diverse physical routes. Relying on a single subsea system - or on cables that share the same physical route - creates single points of failure. Szabi urged operators to combine geographically separated subsea systems with alternative landings and terrestrial paths.
• Be ready to re-engineer routes quickly. Good telemetry and pre-agreed playbooks for BGP changes, prefix rehoming and capacity shifts let teams respond fast rather than scrambling.
• Improve cross-industry coordination. Faster information-sharing between carriers, cable operators, IXPs and vendors shortens repair windows and helps operators make better real-time decisions.
• Invest in better monitoring and peering intelligence. Early warning from subsea telemetry plus smarter peering strategies gives operators more practical options for rebalancing traffic and protecting SLAs.

Why it matters:

RONOG gathers regional operators who sit at key interconnection points between Europe and Asia - the very places where routing choices translate immediately into customer experience. Szabi’s talk linked global subsea incidents to the everyday routing and peering decisions that network engineers make, and made the case that resilience is built from both long-haul planning and quick, well-practised operational responses.