It connects multiple distribution layer switches and provides the fastest possible transport between different physical buildings, server farms, and data centers. Fault tolerance is absolute here; if the core goes down, the entire network fails. Please advise Why we are not connecting the Server direct to the core switch and save some money for buying seperate dedicated switch please help me out What is the advantage for having seperate access switch and then from access switch uplink to the core Please advise Thanks in advance You might. A core switch is the primary switch installed at the backbone of a layered or hierarchical network. You may also want to know: Can a Nintendo Switch Play DS Games? ·. It is a powerful backbone switch in the center of the network core layer, which centralizes multiple aggregation switches to the core and implements LAN routing. In these switches, the data routed and switched.