Cisco's Routed Optical Networking (RON) solution fundamentally changes how IP and optical networks are built and operated forever, and service providers are seeking novel approaches for network efficiency, simplification, and automation. This session showcases the transformation journey of transport networks with RON, which relies on a single control plane that is based on IP/MPLS in a converged (IP and optical network) hop-by-hop architecture. We will dive deeper into common troubleshooting challenges and currently used methodologies, as well as proactive monitoring and diagnostics with Cisco Crosswork Hierarchical Controller. Join us to learn about the lessons learned for RON troubleshooting.