Large Enterprises & Campuses: Centralizing traffic across multiple departments or locations. High Bandwidth Applications: VoIP, video conferencing, large file transfers, or AI workloads. This white paper introduces the following three types of network switches and further discusses the selection criteria for each switch. The hierarchy Ethernet network. In enterprise networking, the hierarchical three-tier model is divided into three distinct roles: access switches (which connect end-user devices to the network via Layer 2), distribution switches (which route inter-VLAN traffic and enforce security policies at Layer 3), and core switches (which. In the realm of system networking, three key types of switches are frequently mentioned: access switches, aggregation switches, and core switches. The layer that lies between the access layer and the. The critical difference between a core, distribution, and access switch lies in its designated role within the three-tier network architecture. Choosing the wrong switch for the job is the single most common cause of performance bottlenecks and network failures we see in the field.