案例3：三层交换配置路由 3.1 问题 如何使用三层交换机实现全网互通？
配置思路： 1.终端设备PC设置 2.交换机配置 -建立vlan 10 20 30 40 -与pc连接接口设置acc模式 加入对应vlan -与三次交换连接接口设置trunk模式并通过所有vlan 注意：所有交换机的vlan一致 3.三层交换配置 -建立vlan 10 20 30 40 -与交换机接口设置trunk并允许全部vlan -设置ip地址是进入int vlanif 10 20 30 40 4.验证与测试
[SW1]vlan batch 10 20 30 40 Info: This operation may take a few seconds. Please wait for a moment...done. [SW1]int e0/0/1 [SW1-Ethernet0/0/1]port link-type acces [SW1-Ethernet0/0/1]port default vlan 10 [SW1-Ethernet0/0/1]int e0/0/2 [SW1-Ethernet0/0/2]port link-type access [SW1-Ethernet0/0/2]port default vlan 20 [SW1-Ethernet0/0/2]int e0/0/3 [SW1-Ethernet0/0/3]port link-type trunk [SW1-Ethernet0/0/3]port trunk allow-pass vlan all
SW2相同
[SW3]vlan batch 10 20 30 40 Info: This operation may take a few seconds. Please wait for a moment...done. [SW3]int g0/0/1 [SW3-GigabitEthernet0/0/1]port link-type trunk [SW3-GigabitEthernet0/0/1]port trunk allow-pass vlan all [SW3-GigabitEthernet0/0/1]int g0/0/2 [SW3-GigabitEthernet0/0/2]port link-type trunk [SW3-GigabitEthernet0/0/2]port trunk allow-pass vlan all [SW3-GigabitEthernet0/0/2]q [SW3]int vlanif 10 [SW3-Vlanif10]ip add 192.168.10.1 24 [SW3-Vlanif10]int vlanif 20 [SW3-Vlanif20]ip add 192.168.20.1 24 [SW3-Vlanif20]int vlanif 30 [SW3-Vlanif30]ip add 192.168.30.1 24 [SW3-Vlanif30]int vlanif 40 [SW3-Vlanif40]ip add 192.168.40.1 24
