The government-funded national research and education network is situated in France. Their challenges are to diverse community of researchers, educators and government agencies, requirements for advanced carrier-class, always-on operation and support for new technologies, high performance and scalability while simplifying infrastructure. They chose Cisco to overcome these challenges. They have implemented grid computing with mesh network, Cisco CRS-1 for its optical capabilities and consolidation within the core and Cisco 12400 routers in the network core. The results of implementing Cisco were scalability within the RENATER core, strong platform for IPv6 and grid computing.