Functional Difference between access layer-Aggregation layer-Core layer switch

The core layer switch is mainly used for route selection and high-speed forwarding, providing an optimized and reliable backbone transmission structure, so the core layer switch application has higher reliability and throughput. The aggregation layer switch is the convergence point of multiple access layer switches. It functions as a unified egress of A-Nodes, forwarding and route selection. It must be able to handle all the traffic from the access layer devices and provide an uplink to the core layer. The function of the access layer switch is to connect the end user to the network, so    the access layer switch has the characteristics of low cost and high port density.                         

Performance difference

The core layer switch is a Layer 3 switch with high-speed forwarding, large-capacity interface bandwidth (such as 10-gigabit interface), and large backplane processing capability. Therefore, its performance is higher than that of aggregation layer switches and access layer switches. Aggregation switches also have some routing functions and can be Layer 2 or Layer 3 switches. Access switches are Layer 2 switches. Therefore, aggregation switches have higher performance, fewer ports, and higher rates than access switches. In short, the performance comparison results of these three switches are: core layer switch > Aggregation layer switch > Access layer switch.

Use scenario difference

There is no fixed requirement for the core layer switch, aggregation layer switch and access layer switch, which layer they are in mainly depends on the size of the network environment and the forwarding capability of the device, not every network must have these three structures, some enterprises only access layer switch and core layer switch, one of the purposes of this approach is to save costs.

The functional differences between access layer, aggregation layer and core layer switches are the key points of the above knowledge. As for the switches mentioned above, they are popular communication products in Shenzhen HDV Phoeletron Technology LTD., such as: Ethernet switch, Fibre switch, Ethernet Fibre switch, etc., the above switches can be used in a variety of environments, to provide more choices for users with different needs, welcome to come to understand, we will provide the best quality service.