For systems with fewer than 32 channels, a core switch is generally unnecessary. A core switch, installed in the core layer, serves as the hub of the network architecture, primarily used for high-speed data exchange and connecting multiple subnets or LANs. Core switches generally offer high bandwidth, low latency, and high reliability, capable of handling large amounts of data. I am confused if the Cisco S G-300-28 MP as an access switch and catalyst 3850 as a core switch will be the best choices to operate the network with full performance without delay and video drop in live view and recording. Access layer: The access layer is directly connected to the user's computer and makes various network resources to access the network.