What Is a Core Switch? 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. Engineered to aggregate massive volumes of data from distribution switches, it provides ultra-low. This help center can answer your questions about customer services, products tech support, network issues. Due to their complexity, these networks require regular maintenance, troubleshooting, and upgrades, which are done in phases. To simplify this. Core switches are the focal point for traffic control between access and distribution switches. They perform a vital function in ensuring the network's reliability and stability because they are in charge of routing data across the network infrastructure in a reliable and timely manner.