Core routing rack architecture integrating Nokia 7210 SAS and 7750 SR7S platforms for high-capacity backbone connectivity. The 7210 SAS ports 1/1/1 and 1/1/2 interconnect via 10GE cables to 7750 SR7S ports 1/1/c1/1 and 1/1/c2/1, enabling redundant paths to the core network. This dual-platform design provides carrier-class reliability, service scalability, and multi-layer switching for service provider networks. Fork and customize this diagram on Diagrams.so to model your specific port configurations, cable types, and redundancy requirements. The 7750 SR7S port 1/1/c3/1 remains available for future expansion or additional service ingress.