A core switch is essential for enterprise networks, offering high speed, reliability, and scalability to manage significant traffic volumes. It operates at the backbone of layered network architectures, consisting of core, distribution, and access layers, and supports advanced Ethernet speeds. Core switches are utilized in data centers and various network types, enabling efficient data routing and resource management.

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Core switch is designed to meet the most demanding enterprise network requirements such as reliability,
high speed, and scalable. It supports the next-generation Ethernet speeds with 10/25 Gigabit Ethernet at
the aggregation and 40/100 Gigabit Ethernet to meet the high volume of traffic driving from the edge
into the core. This article provides some understanding of core switches.

2. Email: ics@suntelecom.cn Skype: suntelecom.s01 Whatsapp: +86 21 6013 8637
What is Core Switch?
A core switch is the network switch installed at the backbone of the layered or hierarchy network.
It is routing and data switching at the core layer of the network.
Three Hierarchical Inter-Networking Design
Three hierarchical inter-networking design consists of core, distribution, and access layers. A core
layer switch functions as a backbone switch for LANWAN access and centralizes multiple
aggregation devices to the core. The distribution layer switch ensures that the packets are routed
between subnets and VLANs in networking. The access layer switch facilitates the connection of
end-node devices, such as APs and wired devices, to the network.
In these three layers, the core switch requires most highly in the switch performance. Core switch
manages high-speed connections, such as 10/ 40G/100G Ethernet.

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Benefits of Using Core Switch
 High capacity
The core switch has a high capacity, which can meet the needs of data centers and work in the
case of a large volume of services.
 Large cache
The core switch has distributed cache architecture, which can improve the memory of the device.
 Virtualization
The core switch can virtualize the data and convert it into resources that can be managed online.
Applications
Core switch is used in data centers, LAN/MAN/WAN, etc.

4. Email: ics@suntelecom.cn Skype: suntelecom.s01 Whatsapp: +86 21 6013 8637
Conclusion
A core switch is used in the hierarchy Ethernet network. It facilitates strategic installation,
management, and maintenance. Sun Telecom specializes in providing one-stop total fiber optic
solutions for all fiber optic application industries worldwide. Contact us if any needs.