A-A+
	单臂路由和交换机一起实现VLAN间路由的组网和配置
一台思科1841路由器、一台C2950-24交换机和两台PC主机组成一个三叉戟形状的网络,利用单臂路由来实现VLAN间的路由通信,组网拓扑图如下:
第一台PC主机为静态ip,具体设置如下图:
第二台PC主机的ip配置:
交换机的配置命令如下:
- Switch>
 - Switch>en
 - Switch>enable
 - Switch#conf
 - Switch#configure
 - Configuring from terminal, memory, or network [terminal]?
 - Enter configuration commands, one per line. End with CNTL/Z.
 - Switch(config)#h
 - Switch(config)#hostname SW1
 - SW1(config)#vl
 - SW1(config)#vlan 2
 - SW1(config-vlan)#exit
 - SW1(config)#in f0/1
 - SW1(config-if)#sw
 - SW1(config-if)#switchport m
 - SW1(config-if)#switchport mode a
 - SW1(config-if)#switchport mode access
 - SW1(config-if)#sw
 - SW1(config-if)#switchport a
 - SW1(config-if)#switchport access v
 - SW1(config-if)#switchport access vlan 1
 - SW1(config-if)#in f0/2
 - SW1(config-if)#sw
 - SW1(config-if)#switchport m
 - SW1(config-if)#switchport mode a
 - SW1(config-if)#switchport mode access
 - SW1(config-if)#sw
 - SW1(config-if)#switchport a
 - SW1(config-if)#switchport access v
 - SW1(config-if)#switchport access vlan 2
 - SW1(config-if)#in f0/3
 - SW1(config-if)#sw
 - SW1(config-if)#switchport m
 - SW1(config-if)#switchport mode t
 - SW1(config-if)#switchport mode trunk
 - SW1(config-if)#exit
 - SW1(config)#
 - %LINK-5-CHANGED: Interface FastEthernet0/3, changed state to up
 - %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to up
 - --------------------------------------------------------------------------------
 - Router>en
 - Router>enable
 - Router#conf
 - Router#configure
 - Configuring from terminal, memory, or network [terminal]?
 - Enter configuration commands, one per line. End with CNTL/Z.
 - Router(config)#h
 - Router(config)#hostname R1
 - R1(config)#in f0/0
 - R1(config-if)#no shu
 - R1(config-if)#no shutdown
 - %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
 - %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
 - R1(config-if)#in f0/0.1
 - %LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
 - %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
 - R1(config-subif)#en
 - R1(config-subif)#encapsulation d
 - R1(config-subif)#encapsulation dot1Q 1 n
 - R1(config-subif)#encapsulation dot1Q 1 native
 - R1(config-subif)#ip add 172.16.1.1 255.255.255.0
 - R1(config-subif)#in f0/0.2
 - %LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
 - %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
 - R1(config-subif)#en
 - R1(config-subif)#encapsulation d
 - R1(config-subif)#encapsulation dot1Q 2
 - R1(config-subif)#ip add 172.16.2.1 255.255.255.0
 - R1(config-subif)#exit
 - R1(config)#
 


