大中型的监控网络，通常会按照接入-汇聚-核心三层结构设计。核心交换机是整个网络的数据转发中心，承载着大量的数据流，所以必须保证核心交换机的各个端口转发没有瓶颈。

怎么选择核心交换机?

选择核心交换机时，应根据IPC数量，如：

①100~200台，推荐千兆管理型交换机

②200~500台，推荐三层管理型交换机

目前二/三层管理型全千兆交换机，均适合作为监控网络的核心交换，承担大容量数据交换。组建各样的网络。对于大型或超大型的监控网络，需要使用三层交换机划分网段，建议使用三层交换机。

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How to choose a core switch?

Large and medium-sized monitoring networks are usually designed according to the three-layer structure of access-convergence-core. The core switch is the data forwarding center of the entire network and carries a large number of data flows. Therefore, it is necessary to ensure that there is no bottleneck in the port forwarding of the core switch.

How to choose a core switch?

When selecting a core switch, it should be based on the number of IPCs, such as:

①100 ~ 200 units, recommended Gigabit managed switches

②200 ~ 500 units, three-layer managed switches are recommended

At present, the Layer 2 / Layer 3 managed full Gigabit switches are suitable as the core exchange of the monitoring network and undertake large-capacity data exchange. Build various networks. For large or very large monitoring networks, you need to use layer 3 switches to divide the network segment. Layer 3 switches are recommended.

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