VLAN间通信----实验

 

 

方法1.增加物理线路

    需求：PC0连接SW的F0/1,PC1连接SW的F0/2; SW创建VLAN10,VLAN20; PC0划到VLAN10; PC1划到VLAN20; 现要求借用路由器实现VLAN通信；PC0的网关192.168.10.254；PC1的网关192.168.20.254；PC0:192.168.10.1/24；PC1:192.168.20.1/24；

    拓扑：

        

    配置：

         交换机配置

          Switch>en

Switch#conf t

Switch(config)#vlan 10

Switch(config-vlan)#exit

Switch(config)#vlan 20

Switch(config-vlan)#exit

Switch(config)#int f0/1

Switch(config-if)#switchport mode access 

Switch(config-if)#switchport access vlan 10

Switch(config-if)#exit

Switch(config)#int f0/2

Switch(config-if)#switchport mode access 

Switch(config-if)#switchport access vlan 20

Switch(config-if)#exit

 

 

Switch(config)#int g0/1

Switch(config-if)#switchport mode access 

Switch(config-if)#switchport access vlan 10

Switch(config-if)#int g0/2

Switch(config-if)#switchport mode access

Switch(config-if)#switchport access vlan 20

Switch(config-if)#end

 

---路由器配置

Router>en

Router#conf t

Router(config)#int f0/0

Router(config-if)#ip address 192.168.10.254 255.255.255.0

Router(config-if)#no shutdown

 

 

Router(config-if)interface f0/1

Router(config-if)#ip address 192.168.20.254 255.255.255.0

Router(config-if)#no shutdown

 

方法2：单臂路由

    需求：PC0连接SW的F0/1,PC1连接SW的F0/2; SW创建VLAN10,VLAN20; PC0划到VLAN10; PC1划到VLAN20; 现要求借用路由器实现VLAN通信；PC0的网关192.168.10.254；PC1的网关192.168.20.254；PC0:192.168.10.1/24；PC1:192.168.20.1/24；

    拓扑：

    

    配置：

          Router(config)#interface f0/0

Router(config-if)#no shut

Router(config-if)#int f0/0.10

Router(config-subif)#

Router(config-subif)#encapsulation dot1Q vlan 10

Router(config-subif)#ip address 192.168.10.254 255.255.255.0

Router(config-subif)#int f0/0.20

Router(config-subif)#encapsulation dot1Q 20

Router(config-subif)#ip add 192.168.20.254 255.255.255.0

Router(config-subif)#do show ip int bri

Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 unassigned YES manual up up

FastEthernet0/0.10 192.168.10.254 YES manual up up

FastEthernet0/0.20 192.168.20.254 YES manual up up

Switch>

Switch>en

Switch#conf t

Switch(config)#int g0/1

Switch(config-if)#switchport mode trunk

Switch(config-if)#switchport trunk allowed vlan all

Switch(config-if)#

 

方法3：借助3层交换开启路由功能

    需求：PC0连接SW的F0/1,PC1连接SW的F0/2; SW创建VLAN10,VLAN20; PC0划到VLAN10; PC1划到VLAN20; 现要求借用路由器实现VLAN通信；PC0的网关192.168.10.254；PC1的网关192.168.20.254；PC0:192.168.10.1/24；PC1:192.168.20.1/24；

    拓扑：

    

 

配置：

Switch>en

Switch#conf t

Switch(config)#vlan 10

Switch(config-vlan)#exit

Switch(config)#vlan 20

Switch(config-vlan)#exit

Switch(config)#int vlan 10

Switch(config-if)#ip add 192.168.10.254 255.255.255.0

Switch(config-if)#int vlan 20

Switch(config-if)#ip add 192.168.20.254 255.255.255.0

Switch(config-if)#exit

Switch(config)#int g0/1

Switch(config-if)#switchport mode access

Switch(config-if)#switchport access vlan 10

Switch(config-if)#int g0/2

Switch(config-if)#switchport mode access

Switch(config-if)#switchport access vlan 20

Switch(config-if)#exit

Switch(config)#ip routing

Switch(config-if)#do show ip route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area

* - candidate default, U - per-user static route, o - ODR

P - periodic downloaded static route

Gateway of last resort is not set

C 192.168.10.0/24 is directly connected, Vlan10

C 192.168.20.0/24 is directly connected, Vlan20

Switch(config-if)#

 

 

 

 

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