The evolution of Internet Protocol (IP)−based technology, coupled with advances in core-routing technology, is changing the way telecommunications carriers deliver once disparate services to their customers. Enabled by an IP/Multiprotocol Label Switching (MPLS) technology, next-generation routers are designed to support multiple applications and services including combined voice, video and data. Core routers today harness incredible power, supporting aggregate throughput of 92 terabits and supporting speeds up to OC-768. Given the advances in core router technology and their important role in the telecommunications architecture, the ability to non-intrusively monitor performance across every type of core router application is key to isolating problems, maintaining service levels and mitigating risks | The Value of Non-Intrusive Core Router Monitoring ADC s Value-Added Module VAM Solution Executive Summary The evolution of Internet Protocol IP -based technology coupled with advances in core-routing technology is changing the way telecommunications carriers deliver once disparate services to their customers. Enabled by an IP Multiprotocol Label Switching MPLS technology next-generation routers are designed to support multiple applications and services including combined voice video and data. Core routers today harness incredible power supporting aggregate throughput of 92 terabits and supporting speeds up to OC-768. Given the advances in core router technology and their important role in the telecommunications architecture the ability to non-intrusively monitor performance across every type of core router application is key to isolating problems maintaining service levels and mitigating risks. This paper addresses why telecommunications carriers need the ability to non-intrusively monitor the core router and best practices are for monitoring. In addition the paper discusses ADC s Value-Added Module VAM monitoring solution ADC s Professional Services role in deploying core router VAM solutions and highlights a successful implementation for a major telecommunications carrier. The Value of Non-Intrusive Core Router Monitoring The Network Core The evolution of IP-based technology continues to drive telecommunications carriers to provide nextgeneration converged IP services against a backdrop of ever increasing bandwidth and performance demands. Packet-based network infrastructures that support highspeed Internet video on demand VoD and Voice over IP VoIP services require telecommunications carriers to upgrade their network architectures to meet the challenges of networking convergence and multiservice delivery. At the heart of network migration and architecture upgrades lay massive core routing solutions designed to meet the growing demands of the carrier s customer .