When configuring a Layer 3 switch, what is a primary function it performs?

A Layer 3 switch primarily performs routing between VLANs, which distinguishes it from a traditional Layer 2 switch that operates solely at the data link layer. By incorporating routing capabilities, a Layer 3 switch can forward packets between different VLANs, allowing for inter-VLAN communication. This is essential in network designs where multiple VLANs are implemented for traffic segmentation and improved security.

Layer 3 switches also leverage routing protocols to identify the best path for traffic between these VLANs, similar to how routers operate. This functionality significantly enhances network efficiency, as it can reduce the need for separate routing devices in some scenarios.

While Layer 2 switching, filtering traffic, and providing wireless connectivity are functions performed by various devices in network architecture, they do not encapsulate the primary role of a Layer 3 switch, which is to facilitate the routing of traffic between VLANs. This capability enables more complex and efficient network designs that can accommodate a greater number of devices and segmented user groups.