1.0 如何配置IP网关<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

S1：vlan 1 ：IP ：<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />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：

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" />

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