思科交换机，三层交换机如何配置？

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portant; overflow-wrap: break-word !important;">前面我们使用过其它的交换机配置，有不少朋友问到关于思科交换机的配置？本期我们来看下。思科交换机，三层交换机如何配置？
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portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(219, 55, 52); font-size: 15px;">portant; overflow-wrap: break-word !important;">三层交换机实现vlan间的相互通信？portant; overflow-wrap: break-word !important; font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; text-align: justify;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">VLAN生成后交换机是互不相通的。portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">因此，在交换机上设置VLAN后，如果未做其他处理，VLAN间是无法通信的。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">为了使大家理解，我们用个实例来讲解三层交换机的配置，实例不同vlan间进行通信，很详细。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; background-color: rgb(0, 0, 0); color: rgb(255, 255, 255);">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">一、实例portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">如下图，有一个公司的网络，共有4个vlan，有4个交换机（分别为S1\S2\S3\S4)，用三层交换机让不同vlan的主机能互相通信，也就是让vlan10、vlan20、vlan30、vlan40之间实现通信。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px; widows: 1;">
portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">前面弱电行业网曾多次以发布关于portant; overflow-wrap: break-word !important;">华为、锐捷、H3C配置实例，本次我们以portant; overflow-wrap: break-word !important;">思科为例，理解了这个配置实例，能够解决很多项目中实际问题。
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portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; background-color: rgb(0, 0, 0); color: rgb(255, 255, 255);">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">二、拓扑图如下
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portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; background-color: rgb(0, 0, 0); color: rgb(255, 255, 255);">portant; overflow-wrap: break-word !important;">二、配置步骤如下：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">1、S1三层交换机配置：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">Switch>en  --进入特权模式
portant; overflow-wrap: break-word !important;">Switch#conf t  --进入全局配置模式
portant; overflow-wrap: break-word !important;">Switch(config)#hostname S1  --修改三层交换机主机名为portant; overflow-wrap: break-word !important;">S1
portant; overflow-wrap: break-word !important;">S1(config)#vtp domain test --创建portant; overflow-wrap: break-word !important;">vtp域
portant; overflow-wrap: break-word !important;">Domain name already set to test.
portant; overflow-wrap: break-word !important;">S1(config)#vtp mode server  --设置当前交换机在portant; overflow-wrap: break-word !important;">vtp的工作模式为portant; overflow-wrap: break-word !important;">server
portant; overflow-wrap: break-word !important;">Device mode already VTP SERVER.
portant; overflow-wrap: break-word !important;">S1(config)#vlan 10  --创建portant; overflow-wrap: break-word !important;">vlan 10
portant; overflow-wrap: break-word !important;">S1(config-vlan)#vlan 20  --创建portant; overflow-wrap: break-word !important;">vlan 20
portant; overflow-wrap: break-word !important;">S1(config-vlan)#vlan 30  --创建portant; overflow-wrap: break-word !important;">vlan 30
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">S1(config-vlan)#vlan 40  --创建portant; overflow-wrap: break-word !important;">vlan40
portant; overflow-wrap: break-word !important;">S1(config-vlan)#interface f0/1  --进入端口
portant; overflow-wrap: break-word !important;">S1(config-if)#switchport mode access  --将端口模式改为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S1(config-if)#switchport mode trunk  --将端口模式改为portant; overflow-wrap: break-word !important;">trunk模式
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">S1(config-if)#interface range f0/2-3  --进入端口
portant; overflow-wrap: break-word !important;">S1(config-if-range)#switchport mode access   --将端口模式改为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S1(config-if-range)#switchport access vlan 40  --将端口划入portant; overflow-wrap: break-word !important;">vlan 40
portant; overflow-wrap: break-word !important;">S1(config-if-range)#exit   --返回上一级
portant; overflow-wrap: break-word !important;">S1(config)#ip routing  --启动三层交换机的路由功能
portant; overflow-wrap: break-word !important;">S1(config)#interface vlan 10  --进入portant; overflow-wrap: break-word !important;">vlan 10
portant; overflow-wrap: break-word !important;">S1(config-if)#ip address 192.168.1.254 255.255.255.0  --给portant; overflow-wrap: break-word !important;">vlan 10添加portant; overflow-wrap: break-word !important;">ip地址
portant; overflow-wrap: break-word !important;">S1(config-if)#interface vlan 20   --进入portant; overflow-wrap: break-word !important;">vlan 20
portant; overflow-wrap: break-word !important;">S1(config-if)#ip address 192.168.2.254 255.255.255.0  --给portant; overflow-wrap: break-word !important;">vlan 20添加portant; overflow-wrap: break-word !important;">ip地址
portant; overflow-wrap: break-word !important;">S1(config-if)#interface vlan 30  --进入portant; overflow-wrap: break-word !important;">vlan 30
portant; overflow-wrap: break-word !important;">S1(config-if)#ip address 192.168.3.254 255.255.255.0  --给portant; overflow-wrap: break-word !important;">vlan 30添加portant; overflow-wrap: break-word !important;">ip地址
portant; overflow-wrap: break-word !important;">S1(config-if)#interface vlan 40  --进入vlan 40
portant; overflow-wrap: break-word !important;">S1(config-if)#ip address 192.168.4.254 255.255.255.0  --给portant; overflow-wrap: break-word !important;">vlan 40添加portant; overflow-wrap: break-word !important;">ip地址
portant; overflow-wrap: break-word !important;">S1(config-if)#end  --返回特权模式
portant; overflow-wrap: break-word !important;">S1#copy running-config startup-config  --保存配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">[OK]  --保存成功
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66); font-size: 15px;">portant; overflow-wrap: break-word !important;">2、S2交换机配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">Switch>en  --进入特权模式
portant; overflow-wrap: break-word !important;">Switch#conf t --进入全局配置模式
portant; overflow-wrap: break-word !important;">Switch(config)#hostname S2  --修改交换机名为portant; overflow-wrap: break-word !important;">S2
portant; overflow-wrap: break-word !important;">S2(config)#vtp mode client  --设置当前交换机在portant; overflow-wrap: break-word !important;">vtp中为客户机模式
portant; overflow-wrap: break-word !important;">Device mode already VTP CLIENT.
portant; overflow-wrap: break-word !important;">S2(config)#interface f0/10  --进入端口
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport mode trunk  --将端口设置为portant; overflow-wrap: break-word !important;">trunk模式
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">S2(config-if)#interface f0/1  --进入端口
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport access vlan 30  --将端口划入portant; overflow-wrap: break-word !important;">vlan30
portant; overflow-wrap: break-word !important;">S2(config-if)#interface f0/2  --进入端口
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport access vlan 20  --将端口划入portant; overflow-wrap: break-word !important;">vlan 20
portant; overflow-wrap: break-word !important;">S2(config-if)#interface f0/3  --进入端口
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S2(config-if)#switchport access vlan 10  --将端口划入portant; overflow-wrap: break-word !important;">vlan 10
portant; overflow-wrap: break-word !important;">S2(config-if)#end  --返回特权模式
portant; overflow-wrap: break-word !important;">S2#copy running-config startup-config  --保存配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">[OK]  --保存成功
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66); font-size: 15px;">portant; overflow-wrap: break-word !important;">3、S3交换机配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">Switch>en  --进入特权模式
portant; overflow-wrap: break-word !important;">Switch#conf t  --进入全局配置模式
portant; overflow-wrap: break-word !important;">Switch(config)#hostname S3  --修改交换机名为portant; overflow-wrap: break-word !important;">S3
portant; overflow-wrap: break-word !important;">S3(config)#vtp mode client  --设置当前交换机在portant; overflow-wrap: break-word !important;">vtp中为客户模式
portant; overflow-wrap: break-word !important;">Device mode already VTP CLIENT.
portant; overflow-wrap: break-word !important;">S3(config)#interface range f0/10-12  --进入端口
portant; overflow-wrap: break-word !important;">S3(config-if-range)#switchport mode trunk  --将端口设置为portant; overflow-wrap: break-word !important;">trunk模式
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">S3(config-if-range)#interface f0/1  --进入端口
portant; overflow-wrap: break-word !important;">S3(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S3(config-if)#switchport access vlan 30  --将端口划入portant; overflow-wrap: break-word !important;">vlan 30
portant; overflow-wrap: break-word !important;">S3(config-if)#interface f0/2  --进入端口
portant; overflow-wrap: break-word !important;">S3(config-if)#switchport mode access   --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S3(config-if)#switchport access vlan 20 --将端口划入portant; overflow-wrap: break-word !important;">vlan20
portant; overflow-wrap: break-word !important;">S3(config-if)#interface f0/3  --进入端口
portant; overflow-wrap: break-word !important;">S3(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S3(config-if)#switchport access vlan 10  --将端口划入portant; overflow-wrap: break-word !important;">vlan 20
portant; overflow-wrap: break-word !important;">S3(config-if)#end  --返回特权模式
portant; overflow-wrap: break-word !important;">S3#copy running-config startup-config  --保存配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">[OK]  --保存成功
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66); font-size: 15px;">portant; overflow-wrap: break-word !important;">4、S4交换机配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">Switch>en  --进入特权模式
portant; overflow-wrap: break-word !important;">Switch#conf t  --进入全局配置模式
portant; overflow-wrap: break-word !important;">Switch(config)#hostname S4  --修改交换机名为portant; overflow-wrap: break-word !important;">S4
portant; overflow-wrap: break-word !important;">S4(config)#vtp mode client  --设置当前交换机在portant; overflow-wrap: break-word !important;">vtp中为客户模式
portant; overflow-wrap: break-word !important;">S4(config)#interface f0/10  --进入端口
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport mode trunk  --将端口设置为portant; overflow-wrap: break-word !important;">trunk模式
portant; overflow-wrap: break-word !important;">S4(config-if)#interface f0/1  --进入端口
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport access vlan 30  --将端口划入portant; overflow-wrap: break-word !important;">vlan 30
portant; overflow-wrap: break-word !important;">S4(config-if)#interface f0/2  --进入端口
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport access vlan 20  --将端口划入portant; overflow-wrap: break-word !important;">vlan 20
portant; overflow-wrap: break-word !important;">S4(config-if)#interface f0/3  --进入端口
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport mode access  --将端口设置为portant; overflow-wrap: break-word !important;">access模式
portant; overflow-wrap: break-word !important;">S4(config-if)#switchport access vlan 10  --将端口划入portant; overflow-wrap: break-word !important;">vlan 10
portant; overflow-wrap: break-word !important;">S4(config-if)#end  --返回特权模式
portant; overflow-wrap: break-word !important;">S4#copy running-config startup-config  --保存配置
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 12px;">portant; overflow-wrap: break-word !important;">[OK]  --保存成功
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(219, 55, 52); font-size: 15px;">portant; overflow-wrap: break-word !important;">三、验证
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">测试portant; overflow-wrap: break-word !important;">不同vlan下的主机是否互通。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">1、portant; overflow-wrap: break-word !important;">PC11与portant; overflow-wrap: break-word !important;">PC33
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">


inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">vlan10与vlan30互通。
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">2、portant; overflow-wrap: break-word !important;">PC13与portant; overflow-wrap: break-word !important;">PC21
portant; overflow-wrap: break-word !important;">

inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-indent: 34px; font-size: 15px;">vlan10与vlan20互通。