在三层交换机上创建VLAN问题 在三层交换机上创建了VLAN30,并在该VLAN的虚拟接口下...

\u4e09\u5c42\u4ea4\u6362\u673aVLAN\u914d\u7f6e\u95ee\u9898

pc0 \u662fvlan10\uff0c192.168.1.2
pc1 \u662fvlan20\uff0c192.168.2.2
pc2 \u662fvlan30\uff0c192.168.3.2

Switch>enable
Switch#configure terminal
Switch(config)#vlan 10
Switch(config-vlan)#exit
Switch(config)#vlan 20
Switch(config-vlan)#exit
Switch(config)#vlan 30
Switch(config-vlan)#exit
Switch(config)#interface fastEthernet 0/1
Switch(config-if)#switchport access vlan 10
Switch(config-if)#exit
Switch(config)#interface fastEthernet 0/2
Switch(config-if)#switchport access vlan 20
Switch(config-if)#exit
Switch(config)#interface fastEthernet 0/3
Switch(config-if)#switchport access vlan 30
Switch(config-if)#exit
Switch(config)#interface vlan 10
Switch(config-if)#ip address 192.168.1.1 255.255.255.0
Switch(config-if)#exit
Switch(config)#interface vlan 20
Switch(config-if)#ip address 192.168.2.1 255.255.255.0
Switch(config-if)#exit
Switch(config)#interface vlan 30
Switch(config-if)#ip address 192.168.1.1 255.255.255.0
Switch(config-if)#exit
Switch(config)#access-list 1 permit host 192.168.1.2
Switch(config)#interface vlan 20
Switch(config-if)#ip access-group 1 out
Switch(config-if)#exit
Switch(config)#interface vlan 30
Switch(config-if)#ip access-group 1 out
Switch(config-if)#exit

\u90a3\u662f\u56e0\u4e3avlan30\u4e0d\u662f\u6d3b\u52a8\u72b6\u6001\uff0c\u5373vlan30\u7684\u4ea4\u6362\u63a5\u53e3\u4e0b\u6ca1\u6709\u8fde\u63a5\u6b63\u5e38\u4f7f\u7528\u7684\u7ec8\u7aef\u3002\u4f60\u968f\u4fbf\u628a\u4e00\u4e2a\u501f\u53e3\u5212\u5165vlan30\uff0c\u5e76\u5728\u8fd9\u63a5\u53e3\u63a5\u4e0apc\uff0cvlanif30\u5c31\u8d77\u6765\u4e86\u3002

一.中心交换的VLAN配置

(1)激活vlan路由

Switch1#config t

Switch1(config)#ip routing

(2)创建三个VLAN

Switch1#

Switch1#vlan database

Switch1(vlan)#vlan 2

Switch1(vlan)#vlan 3

Switch1(vlan)#vlan 10

Switch1(vlan)#exit

(3)给VLAN分配IP

Switch1#config t

Switch1(config)#config vlan2

Switch1(config-if)#ip address 192.168.2.1 255.255.255.0

Switch1(config-if)#no shutdown

Switch1#config t

Switch1(config)#config vlan3

Switch1(config-if)#ip address 192.168.3.1 255.255.255.0

Switch1(config-if)#no shutdown

Switch1#config t

Switch1(config)#config vlan10

Switch1(config-if)#ip address 192.168.10.1 255.255.255.0

Switch1(config-if)#no shutdown

(4)配VTP

Switch1#

Switch1#config t

Switch1(config)#vtp domain china_mobile

Switch1(config)#vtp mode server

Switch1(config)#end

(5)配Trunk

Switch1#

Switch1#config t

Switch1(config)#interface gigabitethernet0/1

Switch1(config-if)#switchport trunk encapsulation isl

Switch1(config-if)#switchport mode trunk

Switch1(config-if)#end

(6)给中心交换机通往路由器的接口配IP

Switch1#

Switch1#config t

Switch1(config)#interface fastethernet0/1

Switch1(config-if)#no switchport

Switch1(config-if)#ip address 200.1.1.1 255.255.255.0

Switch1(config-if)#no shutdown

(7)给中心交换机配置缺省路由

Switch1#

Switch1#config t

Switch(config)#ip route 0.0.0.0 0.0.0.0 200.1.1.2

(8)把VLAN号分配给IP接口

Switch1#

Switch1#config t

Switch1(config)#interface fastethernet0/2

Switch1(config-if)#switchport mode access

Switch1(config-if)#switchport access vlan2

Switch1(config-if)#spanning-tree portfast

… …

Switch1#

Switch1#config t

Switch1(config)#interface fastethernet0/13

Switch1(config-if)#switchport mode access

Switch1(config-if)#switchport access vlan3

Switch1(config-if)#spanning-tree portfast

(其它同)

(9)配访问控制列表ACL禁VLAN3子网的客户机访问服务器

Switch1#

Switch1#config t

Switch1(config)#access-list 1 deny 192.168.3.0 0.0.0.255

Switch1(config)#access-list 1 permit any

Switch1(config)#interface fastethernet0/13 (此接口接服务器)

Switch1(config-if)#ip access-group 1 out

(10)检查上述配置

Switch1#show vlan

Switch1#show ip route

Switch1#show interface gigabitethernet0/1 switchport

Switch1#show run

Switch1#show vtp status

(11)存配置

Switch1#copy running-config startup-config

二.在接入层交换机Swith2上VLAN的配置

(1)配TRUNK

Switch2#

Swtich2#config t

Switch2(config)#interface gigabitethernet0/1

Switch2(config-if)#switchport trunk encapsulation isl

Switch2(config-if)#switchport mode trunk

Switch2(config-if)#end

Switch2#

Swtich2#config t

Switch2(config)#interface gigabitethernet0/2

Switch2(config-if)#switchport trunk encapsulation isl

Switch2(config-if)#switchport mode trunk

Switch2(config-if)#end

(2)配VTP

Switch2#

Switch2#config t

Switch2(config)#vtp mode client

Switch2(config)#vtp domain china_mobile

Switch2(config)#end

(3)给接口分配VLAN号

Switch2#

Switch2#config t

Switch2(config)#interface fastethernet0/1

Switch2(config-if)#switchport mode access

Switch2(config-if)#switchport access vlan2

Switch2(config-if)#spanning-tree portfast

… …

(其它端口配置同)

(4)存配置

Switch2#copy running-config startup-config

VLAN是个虚拟的IP层的连接,就是说,这是工作在第二层的协议,三层协议则有着让不同VLAN的可以交换信息的功能
当VLAN划分好后,在三层创建SVI,也就是虚拟的VLAN接口,将VLAN在3层当作接口来操作,这样默认情况下,每个VLAN的SVI就是2层VLAN的网关了

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