思科设备VLAN之间通信配置

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                                                一、    图例说明：（S1、S2 、S3 、S4、S5、S6 、S7 、S8 、S9为二层交换，S0为三层交换）。
二、    拓扑图分析：该网络拓扑是根据宿舍楼的真实环境搭建的（根据图示文字提示标记）：1.    宿舍内部网【每个宿舍一个VLAN，由很多个VLAN 组成】。2.    接入网（宿舍交换机接入到楼层交换机，楼层交换机接入到宿舍楼的三层交换机）。三、    要求1.    使用vtp协议让交换机学到VLAN。2.    将楼层交换下层的宿舍交换加入到VLAN 。3.    在宿舍楼的三层交换为VLAN 网段配置地址。4.    最终使得全网通，宿舍之间通信。一、    操作步骤：

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1．打开三层交换S0的trunk口
S0#conf t
S0(config)#int fa 0/1
S0(config-if)#switchport trunk encapsulation dot1q
S0(config-if)#switchport mode trunk
S0(config-if)#exit
S0(config)#int fa 0/2
S0(config-if)#switchport trunk encapsulation dot1q
S0(config-if)#switchport mode trunk
S0(config-if)#exit
S0(config)#int fa 0/3
S0(config-if)#switchport trunk encapsulation dot1q
S0(config-if)#switchport mode trunk

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1．打开S1交换的trunk口
S1#conf t
S1(config)#int fa 0/1
S1(config-if)#switchport mode trunk

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2．打开S2交换的trunk口
S2#conf t
S2(config)#int fa 0/1
S2(config-if)#switchport mode trunk

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3．打开S3交换的trunk口
S3#conf t
S3(config)#int fa 0/1
S3(config-if)#switchport mode trunk

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4．创建VLAN 并启动VTPS1#vlan database
S1(vlan)#vtp domain liu
Changing VTP domain name from a to liu
R1(vlan)#vlan 2
VLAN 2 added:
Name: VLAN0002
R1(vlan)#vlan 3
VLAN 3 added:
Name: VLAN0003
R1(vlan)#vlan 4
VLAN 4 added:
Name: VLAN0004
R1(vlan)#vlan 5
VLAN 5 added:
Name: VLAN0005
R1(vlan)#vlan 6
VLAN 6 added:
Name: VLAN0006
R1(vlan)#vlan 7
VLAN 7 added:
Name: VLAN0007

5．将端口加入到VLANS1(config)#int fa 0/2
S1(config-if)#switchport mode access
S1(config-if)#switchport access vlan 2
S1(config)#int fa 0/3
S1(config-if)#switchport mode access
S1(config-if)#switchport access vlan 3

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S2(config)#int fa 0/3
S2(config-if)#switchport mode access
S2(config-if)#switchport access vlan 4
S2(config)#int fa 0/2
S2(config-if)#switchport mode access
S2(config-if)#switchport access vlan 5

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S3(config)#int fa 0/2
S3(config-if)#switchport mode access
S3(config-if)#switchport access vlan 6
S3(config)#int fa 0/3
S3(config-if)#switchport mode access
S3(config-if)#switchport access vlan 7

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6．在三层交换S0上配置VLAN的IP地址S0#conf t
S0(config)#int vlan 2
S0(config-if)#ip address 192.168.2.1 255.255.255.0
S0(config)#int vlan 3
S0(config-if)#ip address 192.168.3.1 255.255.255.0
S0(config)#int vlan 4
S0(config-if)#ip address 192.168.4.1 255.255.255.0
S0(config)#int vlan 5
S0(config-if)#ip address 192.168.5.1 255.255.255.0
S0(config)#int vlan 6
S0(config-if)#ip address 192.168.6.1 255.255.255.0
S0(config)#int vlan 7
S0(config-if)#ip address 192.168.7.1 255.255.255.0
7．在三层交换S0上配置DHCP服务S0(config)#ip dhcp pool 2
S0(dhcp-config)#network 192.168.2.0 255.255.255.0
S0(dhcp-config)#default-router 192.168.2.1
S0(config)#ip dhcp pool 3
S0(dhcp-config)#network 192.168.3.0 255.255.255.0
S0(dhcp-config)#default-router 192.168.3.1
S0(config)#ip dhcp pool 4
S0(dhcp-config)#network 192.168.4.0 255.255.255.0
S0(dhcp-config)#default-router 192.168.4.1
S0(config)#ip dhcp pool 5
S0(dhcp-config)#network 192.168.5.0 255.255.255.0
S0(dhcp-config)#default-router 192.168.5.1
S0(config)#ip dhcp pool 6
S0(dhcp-config)#network 192.168.6.0 255.255.255.0
S0(dhcp-config)#default-router 192.168.6.1
S0(config)#ip dhcp pool 7
S0(dhcp-config)#network 192.168.7.0 255.255.255.0
S0(dhcp-config)#default-router 192.168.7.1
8．在三层交换S0上查看路由表S0(config)#ip routing
S0#show ip route

9．给PC网络设置DHCP自动获取
10．给PC网络设置DHCP自动获取
11．连通性测试

                                       

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