Enables IP routing between VLANs, subnets, and security zones, with advanced routing protocols. Includes dual power supplies, hot-swappable modules, link aggregation (LAG), and support for HSRP/VRRP. Modular chassis or stackable designs make it easy to scale as your network grows. The Definitive Guide to Network Architecture A core switch is a high-capacity, high-performance Layer 3 switch positioned at the physical backbone of an enterprise network. It serves as the hub for data transmission in the network.