单臂路由的配置
1.0
如何配置IP网关
S1
：vlan 1 ：IP ： 10.1.0 .216
vlan 10
： name--V1 下属pc：IP：192.168.1.x24 网关 192.168.1.25424
vlan 20
： name--V2 下属pc：IP：192.168.2.x24 网关 192.168.2.25424
S2
：vlan1：IP： 10.2.0 .216
vlan 30
： name--V3 下属pc：IP：192.168.3.x24 网关 192.168.3.25424
vlan 40
： name--V4 下属pc：IP：192.168.4.x24 网关 192.168.4.25424
R1
：F00：IP： 10.1.0 .116
虚接口地址：
F00.1 IP
：192.168.1.25424
F00.2 IP
：192.168.2.25424
F01
：IP： 10.2.0 .116
虚接口地址：
F01.1 IP
：192.168.3.25424
F01.2 IP
：192.168.4.25424
拓扑图如下：
1.1
交换机S1 S2的配置：
S1
配置如下
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#host
Switch(config)#hostname S1
S1(config)#vlan 10
S1(config-vlan)#name V1
S1(config-vlan)#exit
S1(config)#vlan 20
S1(config-vlan)#name V2
S1(config-vlan)#int vlan 1
S1(config-if)#ip address 10.1.0 .2 255.255.0.0
S1(config-if)#no shut
%LINK-5-CHANGED: Interface Vlan1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up
S1(config-if)#int f0/2
S1(config-if)#switchport mode access
S1(config-if)#switchport access vlan 10
S1(config-if)#no shut
S1(config-if)#int f0/3
S1(config-if)#switchport mode access
S1(config-if)#switchport access vlan 20
S1(config-if)#no shut
S1(config-if)#int f0/1
S1(config-if)#switchport mode trunk
S1(config-if)#switchport trunk allowed vlan all
S1(config-if)#no shut
S1(config-if)#end
%SYS-5-CONFIG_I: Configured from console by console
S1#sh vlan
S2
设置如下
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname S2
S2(config)#vlan 30
S2(config-vlan)#name V3
S2(config-vlan)#no shut
% Invalid input detected at '^' marker.
S2(config-vlan)#vlan 40
S2(config-vlan)#name V4
S2(config-vlan)#int vlan 1
S2(config-if)#ip address 10.2.0 .2 255.255.0.0
S2(config-if)#no shut
%LINK-5-CHANGED: Interface Vlan1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up
S2(config-if)#int f0/2
S2(config-if)#swit m a
S2(config-if)#swit access vlan 30
S2(config-if)#no shut
S2(config-if)#int f0/3
S2(config-if)#swit m a
S2(config-if)#swit a vlan 40
S2(config-if)#no shut
S2(config-if)#int f0/1
S2(config-if)#swit m t
S2(config-if)#swit trunk allowed vlan all
S2(config-if)#no shut
S2(config-if)#end
%SYS-5-CONFIG_I: Configured from console by console
S2#sh vlan
1.3
路由器的配置 ：
路由器R1设置
Router>enable
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#
R1(config)#int f0/0
R1(config-if)#ip address 10.1.0 .1 255.255.0.0
R1(config-if)#no shut
%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)#int f0/1
R1(config-if)#ip address 10.1.1 .1 255.255.0.0
% 10.1.0 .0 overlaps with FastEthernet0/0
R1(config-if)#ip address 10.2.0 .1 255.255.0.0
R1(config-if)#no shut
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
R1(config-if)#int 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)#encapsulation dot1q 10
R1(config-subif)#ip address 192.168.1.254 255.255.255.0
R1(config-subif)#no shut
R1(config-subif)#int 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)#encapsulation dot1q 20
R1(config-subif)#ip address 192.168.2.254 255.255.255.0
R1(config-subif)#no shut
R1(config-subif)#int f0/1.1
%LINK-5-CHANGED: Interface FastEthernet0/1.1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1.1, changed state to upR1(config-subif)#encapsulation dot1q 30
R1(config-subif)#ip address 192.168.3.254 255.255.255.0
R1(config-subif)#no shut
R1(config-subif)#int f0/1.2
%LINK-5-CHANGED: Interface FastEthernet0/1.2, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1.2, changed state to up
R1(config-subif)#encapsulation dot1q 40
R1(config-subif)#ip address 192.168.4.254 255.255.255.0
R1(config-subif)#no shut
R1(config-subif)#end
%SYS-5-CONFIG_I: Configured from console by console
现在，可以设置PC的属性了，别忘了四处ping下，检查是否设置成功。
二层交换机只允许同时存在一个vlan，这就决定了我们不可能靠二层交换机实现vlan的通讯，我们需要支持路由功能的三层交换机或者路由器来实现它。
3
层交换实现vlan通讯,好像不用多说了,interface vlan vlan-id 然后配置ip地址,ip address <ip address > <subnet mask>,前提是已经no switchport开启3层的路由功能了.而所说的虚接口地址就是vlan的ip address
本文出自 “企业VLAN路由” 博客，谢绝转载！