不同vlan之间通信地三种方式.doc

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不同vlan间的通信简单配置
1．单臂路由(图)
环境：一台路由器，一台二层交换机，两台pc机 二层交换机的配置一般模式：Switch>输入enable进入特权模式：Switch>enable输入configure terminal进入全局配置模式：Switch#configure terminal Enter configuration mands, one per line.  End with TL/ 10 和 vlan 20：Switch(config)#vlan 10Switch(config-vlan)#vlan 20Switch(config-vlan)# exit进入接口配置模式：Switch(config)#interface fastEthernet 0/1把0/1变成trunk口〔默认是access口〕Switch(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
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%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
Switch(config-if)#exit进入接口配置模式分别把对应的接口，参加对应的vlan：Switch(config)#interface fastEthernet 1/1
Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10
Switch(config-if)#interface fastEthernet 2/1Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 20
到此二层交换机配置完毕！
路由器的配置：
Router>Router>enableRouter#configure terminal Enter configuration mands, one per line.  End with TL/(config)#inter fas 0/0
Router(config-if)#no ip address Router(config-if)#no shutdown
注意：单臂路由的配置父接口一定要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
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Router(config-if)#exit
%LINK-5-CHANGED: Interface FastEthernet0/, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/, changed state to up
Router(config-subif)#encapsulation dot1Q 10
%LINK-5-CHANGED: Interface FastEthernet0/, changed state to up
% Configuring IP routing on a LAN subinterface is only allowed if thatsubinterface is already configured as part of an IEEE , IEEE ,or ISL vLAN.
Router(config-subif)#encapsulation dot1Q 20Router(config-subif)#ip address (config-subif)#no shutdown Router(config-subif)#
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