# 应用场景

## 二层网络​

| 场景         | 骨干网​ (Fabric) | 接入网 (最后一公里) | 接入网 (最后一公里) | 接入网 (最后一公里) | 入口​ (第一公里) |
| ---------- | ------------- | ----------- | ----------- | ----------- | ---------- |
|            | 二层网络​         | 端口          | 跳线          | 本地线         | 云连接​       |
| IDC 到 IDC​ | √             | √           | √           |             |            |
| 办公室到 IDC​  | √             | √           | √           | √           |            |
| IDC 到云​    | √             | √           | √           |             | √          |
| 办公室到云​     | √             | √           |             | √           | √          |

## 三层网络

| 场景         | 骨干网​ (Fabric) | 接入网 (最后一公里) | 接入网 (最后一公里) | 接入网 (最后一公里) | 接入网 (最后一公里) | 入口​ (第一公里) |
| ---------- | ------------- | ----------- | ----------- | ----------- | ----------- | ---------- |
|            | 三层网络​         | 端口          | 跳线          | 本地线         | 虚拟边缘        | 云连接​       |
| IDC 到 IDC​ | √             | √           | √           |             |             |            |
| 办公室到 IDC​  | √             | √           | √           |             | √           |            |
| IDC 到云​    | √             | √           | √           |             |             | √          |
| 办公室到云​     | √             |             |             |             | √           | √          |

{% hint style="info" %} <mark style="color:blue;">**注意**</mark>

* <mark style="color:blue;">IDC 指的是 Internet Data Center。</mark>
* <mark style="color:blue;">如果您的数据中心距离我们的 SDN POP 设备端口太远，无法建立跳线连接，可以选择部署本地线。</mark>
  {% endhint %}

***


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