What is the difference between aggregation switches and core switches?

Difference: 1. Core switches are switches deployed at the core layer, while aggregation switches are switches deployed at the aggregation layer; 2. Core switches are used for routing and high-speed forwarding, while aggregation layer switches are used for unification The exit of the access node; 3. The core layer switch uses a network managed switch, and the aggregation switch uses a switch that supports three-layer switching technology and VLAN.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Switch means "switch" and is a network device used for forwarding electrical (optical) signals. It can provide an exclusive electrical signal path for any two network nodes connected to the switch.

The difference between aggregation switches and core switches

1. Different concepts

Deployed in the core The network switches at the aggregation layer are called core switches;

The switches deployed at the aggregation layer are called aggregation switches.

2. Different functions

The main function of the core switch is for routing selection and high-speed forwarding, providing an optimized and reliable backbone transmission structure, so the core layer switch Applications have higher reliability, performance and throughput.

The aggregation layer switch is the aggregation point of multiple access layer switches. Its function is to unify the egress of the access nodes and also perform forwarding and routing. It must be able to handle all traffic from the access layer devices and provide an uplink to the core layer.

3. Different characteristics

Because the core switch accepts and aggregates all traffic, there is always a high demand for the core switch. Reliability, efficiency, high fault tolerance, manageability, low latency and other requirements. Generally, network managed switches are used as core layer switches.

The aggregation layer switch is the aggregation point of multiple access switches. It needs to have the ability to process access layer information and submit it to the core layer uplink. It also needs to have network isolation and segmentation effects. , so aggregation switches mostly use switches that support layer 3 switching technology and VLAN.

4. Different usage scenarios

There are no fixed requirements for core switches or aggregation switches. It depends on the size of the network environment and the forwarding capability of the device. Not every network must have these three structures.

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