拓扑图：

一、配置交换机vtp

SW1：

SW1>enable
SW1#config t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#hostname SW1
SW1(config)#vlan 10
SW1(config-vlan)#exit
SW1(config)#vlan 20
SW1(config-vlan)#exit
SW1(config)#vtp mode server      //配置sw1为服务器端
Device mode already VTP SERVER.
SW1(config)#vtp domain cisco       //配置vtp 的域名为Cisco
Domain name already set to cisco.
SW1(config)#vtp password cisco123  //配置密码
Password already set to cisco123
SW1(config)#service password-encryption   //明文密码加密
SW1(config)#interface f0/1
SW1(config-if)#switchport mode trunk  //配置两交换机间链路模式为trunk
SW1(config-if)#switchport trunk allowed vlan all
SW1(config-if)#no shutdown
SW1(config-if)#exit
SW1(config)#interface f0/2
SW1(config-if)#switchport mode access
SW1(config-if)#switchport access vlan 10
SW1(config-if)#no shutdown
SW1(config-if)#exit
SW1(config)#interface f0/3
SW1(config-if)#switchport mode trunk  //配置路由器与交换机相连链路为trunk
SW1(config-if)#switchport trunk allowed vlan all
SW1(config-if)#no shutdown
SW1(config-if)#exit
SW1(config)#

sw2:

SW2>enable
SW2#config t
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#hostname SW2
SW2(config)#vtp mode client
Device mode already VTP CLIENT.
SW2(config)#vtp domain cisco    //配置sw2为vtp客户端模式
Domain name already set to cisco.
SW2(config)#vtp password cisco123  //配置密码
Password already set to cisco123
SW2(config)#service password-encryption  //明文密码加密
SW2(config)#interface f0/1
SW2(config-if)#switchport mode trunk
SW2(config-if)#switchport trunk allowed vlan all
SW2(config-if)#no shutdown
SW2(config-if)#exit
SW2(config)#interface f0/2
SW2(config-if)#switchport mode access
SW2(config-if)#switchport access vlan 20
SW2(config-if)#no shutdown
SW2(config-if)#exit
SW2(config)#

二、在SW2上查看，是否学习到相应的VLAN

SW2(config)#do show vlan

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/3, Fa0/4, Fa0/5, Fa0/6
                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                Fa0/23, Fa0/24, Gig1/1, Gig1/2
10   VLAN0010                         active
20   VLAN0020                         active    Fa0/2
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup 

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet  100001     1500  -      -      -        -    -        0      0
10   enet  100010     1500  -      -      -        -    -        0      0
20   enet  100020     1500  -      -      -        -    -        0      0
1002 fddi  101002     1500  -      -      -        -    -        0      0
1003 tr    101003     1500  -      -      -        -    -        0      0
1004 fdnet 101004     1500  -      -      -        ieee -        0      0
1005 trnet 101005     1500  -      -      -        ibm  -        0      0   

Remote SPAN VLANs
------------------------------------------------------------------------------

Primary Secondary Type              Ports
------- --------- ----------------- ------------------------------------------
SW2(config)#

由查看结果可知，SW2交换机已从SW1交换机学习到了VLAN 10和VLAN 20。

三、配置路由器子接口

AR1:

AR1>enable
AR1#config t
Enter configuration commands, one per line.  End with CNTL/Z.
AR1(config)#hostname AR1
AR1(config)#interface g0/0   //进入物理接口
AR1(config-if)#no shutdown  //启用该接口
AR1(config-if)#interface g0/0.10  //进入子接口
AR1(config-subif)#encapsulation dot1q 10  // 将子接口封装到VLAN 10中
AR1(config-subif)#ip address 192.168.10.254 255.255.255.0
//配置IP地址
AR1(config-subif)#no shutdown   //启用子接口
AR1(config-subif)#exit
AR1(config)#interface g0/0.20
AR1(config-subif)#encapsulation dot1q 20   //将子接口封装到VLAN 20中
AR1(config-subif)#ip address 192.168.20.254 255.255.255.0
AR1(config-subif)#no shutdown
AR1(config-subif)#exit
AR1(config)#

四、电脑终端ip地址配置

PC1:
192.168.10.1
255.255.255.0
192.168.10.254

PC2:
192.168.20.1
255.255.255.0
192.168.20.254

五、测试

PC1 ping PC2

PC2 ping PC1

原文地址：http://blog.51cto.com/12184141/2314326