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1、欢迎共阅 三层交换机与路由器的配置实例（图解） 目的：学会使用三层交换与路由器让处于不同网段的网络相互通信 实验步骤：一：二层交换机的配置： 在三个二层交换机上分别划出两VLAN ，并将二层交换机上与三层交换或路由器上的接线 设置为 trunk 接口 二：三层交换机的配置： 1：首先在三层交换上划出两个VLAN ，并进入 VLAN 为其配置 IP，此 IP 将作为与他相连 PC的网关。 2：将与二层交换机相连的线同样设置为trunk 接线，并将三层交换与路由器连接的线设 置为路由接口（ no switchsport） 3：将路由器和下面的交换机进行单臂路由的配置 实验最终结果：拓扑图下各个PC
2、均能相互通信 交换机的配置命令： SW 0: Switch Switchen Switch#conf Configuring from terminal, memory, or network terminal? Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#vlan 2 Switch(config-vlan)#exit Switch(config)#int f0/2 Switch(config-if)#switchport access vlan 2 Switch(config-if)#
3、no shut Switch(config-if)#int f0/3 欢迎共阅 Switch(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to up Switch(config-if)#exit Switch(config)# SW 1: Swi
4、tchen Switch#conf Configuring from terminal, memory, or network terminal? Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#int f0/2 Switch(config-if)#switchport access vlan 2 % Access VLAN does not exist. Creating vlan 2 Switch(config-if)#no shut Switch(config-if)#exit Swi
5、tch(config)#int f0/3 Switch(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to up Switch(config-if)# SW 2: Switchen 欢迎共阅 Switch#conf Configuring from
6、 terminal, memory, or network terminal? Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#int f0/2 Switch(config-if)#switchport access vlan 2 % Access VLAN does not exist. Creating vlan 2 Switch(config-if)#exit Switch(config)#int f0/3 Switch(config-if)#switchport mode trunk
7、 Switch(config-if)# 三层交换的配置命令： Switchen Switch#conf Configuring from terminal, memory, or network terminal? Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#int f0/1 Switch(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, ch
8、anged state to down Switch(config-if)#exit Switch(config)#int f0/2 Switch(config-if)#switchport mode trunk Switch(config-if)#exit Switch(config)#vlan 2 Switch(config-vlan)#exit 欢迎共阅 Switch(config)#int vlan 1 Switch(config-if)#no shut %LINK-5-CHANGED: Interface Vlan1, changed state to up %LINEPROTO-5
9、-UPDOWN: Line protocol on Interface Vlan1, changed state to up Switch(config-if)#exit Switch(config)#int vlan 2 %LINK-5-CHANGED: Interface Vlan2, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan2, changed state to upSwitch(config-if)#ip add Switch(config-if)# %LINK-5-CHANGED:
10、 Interface FastEthernet0/3, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to up Switch(config-if)#exit Switch(config)#int f0/3 Switch(config-if)#no switchport %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down %
11、LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to upSwitch(config-if)# Switch(config-if)#no shut Switch(config-if)#exit Switch(config)#ip routing 欢迎共阅 Switch(config-if)#exit Switch(config)# 路由器的配置： Routeren Router#conf Configuring from terminal, memory, or network term
12、inal? Enter configuration commands, one per line. End with CNTL/Z. Router(config)#int f0/0 Router(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up Router(config-if)#exit Router(config)#int f0/1 Router(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet0/1, ch
13、anged state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up Router(config-if)#exit Router(config)#int f0/0 Router(config-if)#no shut Router(config-if)#exit Router(config)#int f0/0.1 Router(config-subif)#encapsulation dot1Q 1 Router(config-subif)#exit 欢迎共阅 R
14、outer(config)#int f0/0.2 Router(config-subif)#encapsulation dot1Q 2 Router(config-subif)#ip add Router(config-subif)#exit Router(config)#exit %SYS-5-CONFIG_I: Configured from console by console Router#conf Configuring from terminal, memory, or network terminal? Enter configuration commands, one per line. End with CNTL/Z. Router(config)#int f0/1 Router(config-if)#ip add Router(config-if)#