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Core Switch

What Is Core Switch?

Core switch, also called backbone switch, serves as the gateway to a Wide Area Network. They are the last aggregation part of the network and give the authority for other network devices to work together in the same system. Core switch is normally with at least a 10Gbps transmission rate to handle high-speed traffic. In the core layer, switching ends and routing begins. Core switches are normally designed with basic routing features according to different functions needed. Unlike normal cascade switches, core switches must also be a layer 3 switch with a strong redundancy function to make sure the traffic and data transmission are fast enough and reliable.

What are the Differences Between Core Switch and Other Switches?

The biggest difference between the network core switch and other switches is that the core switch has to be a fully managed switch. It's always required to be fast enough and highly available under all kinds of circumstances. Since it's connected with all aggregation switches, core switches are also demanded to be with enough fault tolerance. For a switch that is not required to be used in the core layer, it can be both managed and unmanaged types.

The second difference is that a core layer network switch is not always needed, especially in small networks. In many small networks, there are only several servers and the network service is just for a certain small number of customers so there is no actual need for any core switches. Only under certain network needs scenarios, core switch and distribution switches are needed and can play a big part in it.

The third difference is that for a small or middle-sized network, normally 1 or 2 core layer switches would be enough. And the second one is normally just for redundancy. But it's totally different for the aggregation layer, there can be multiple layers of cascade and aggregation.

Core Switch Function

1. The function of a core switch is to adopt a modular structure, have a considerable number of slots and have a strong network expansion ability to protect the original data.

2. The core switch is not a type of switch, but the switch placed on the core layer (network backbone) is called the core switch.

3. The core switch is for the network architecture. If it is a small LAN with several computers, an 8-port small switch can be called the core switch.

4. In the network industry, the network distribution switch refers to a layer 2 or 3 switches with network management function and strong throughput. For a network with more than 100 computers, the core switch is essential if you want to operate stably and at high speed.

5. The HSRP and VRRP protocols are used to ensure the load sharing and hot backup of core equipment. When a switch in the core switch and double convergence switch fails, the three-layer routing equipment and virtual gateway can switch quickly, realize the redundant backup of dual lines and ensure the stability of the whole network.

HS's Goal On Core Switch

At the moment, we are at the developing phase on core and distribution switches. But we've been noticing its promising market needs and we've made good plans to develop. We are making progress every day and hope to grow with you altogether.

Video of Core Switch

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