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+## 三层交换机
+
+![image-20240511112656497](./image-20240511112656497.png)
+
+### 二层交换机
+
+```js
+Switch>en
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#vlan 10
+Switch(config-vlan)#int vlan 10
+Switch(config-if)#int f0/3
+Switch(config-if)#sw acc vlan 10
+Switch(config-if)#vlan 20
+Switch(config-vlan)#int vlan 20
+Switch(config-if)#int f0/2
+Switch(config-if)#sw acc vlan 20
+Switch(config-if)#int f0/1
+Switch(config-if)#sw m t
+```
+
+### 三层交换机
+
+```js
+
+Switch(config-if)#ex
+Switch(config)#int vlan 10
+Switch(config-if)#int f0/2
+Switch(config-if)#sw acc vlan 10
+Switch(config-if)#do show r
+
+```
+
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