With the use of a core layer, each aggregation switch only needs 2x100-GbE links, and the core layer is the only place where you need large numbers of 100-GbE ports. For example, if you have n =10, then you have 22 links instead of 45. 3 Tbps of switching capacity and 9404R ( in SVL ) which has switching capacity of 9 Tbps. What are the Factors to Consider When Choosing a Core Switch? As you can. It connects multiple distribution layer switches and provides the fastest possible transport between different physical buildings, server farms, and data centers. Most of the network ports are Gigabit Ethernet or 100M Ethernet ports.