Cisco VTP中继协议配置

VTP协议：

VLAN中继协议，VTP，VLAN TRUNKING PROTOCOL，是CISCO专用协议，大多数交换机都支持该协议。VTP负责在VTP域内同步VLAN信息，

这样就不必在每个交换上配置相同的VLAN信息。VTP还提供一种映射方案，以便通信流能跨越混合介质的骨干。VTP最重要的作用是，将进行

变动时可能会出现在的配置不一致性降至最低。不过，VTP也有一些缺点，这些缺点通常都与生成树协议有关．

知识点：

VLAN中继协议（VTP）利用第2层中继帧，在一组交换机之间进行VLAN通信．VTP从一个中心控制点开始，维护整个企业网上VLAN的添加和重命名工作，确保配置的一致性。

设计思路：

1、 Cisco C3560配置成为VTP server并设置VTP管理域名称CCTV

2、 Cisco C3560创建三个VLAN(VLAN10  VLAN20  VLAN 30)并配置每个VLAN动态获取IP

3、 Cisco C3650 分配三个端口fa 0/1-3 设置为trunk

4、 三台Cisco C2960配置成为 VTP client

5、 C2960_01 分配fa 0/1-5给VLAN 10 ，并设置fa0/24端口为trunk

6、 C2960_02 分配fa 0/1-5给VLAN 20 ，并设置fa0/24端口为trunk

7、 C2960_03 分配fa 0/1-5给VLAN 30 ，并设置fa0/24端口为trunk

网络拓扑图：

Cisco C3560配置如下：

##设置VTP 域名名称及VTP Server

C3560>enable

C3560#vlan database

C3560(vlan)#vtp domain CCTV

C3560(vlan)#vtp server

##创建VLAN 10  VLAN 20  VLAN 30

C3560(vlan)#vlan 10 name VLAN10

C3560(vlan)#vlan 20 name VLAN20

C3560(vlan)#vlan 30 name VLAN30

C3560(vlan)#exit

##VLAN配置IP地址

3560#configure terminal

C3560(config)#interface vlan 10

C3560(config-if)#ip address 192.168.10.1 255.255.255.0

C3560(config-if)#exit

C3560(config)#interface vlan 20

C3560(config-if)#ip address 192.168.20.1 255.255.255.0

C3560(config-if)#exit

C3560(config)#interface vlan 30

C3560(config-if)#ip address 192.168.30.1 255.255.255.0

C3560(config-if)#exit

##配置DCHP

C3560(config)#service dhcp

C3560(config)#ip dhcp pool vlan10_dhcp

C3560(dhcp-config)#network 192.168.10.0 255.255.255.0

C3560(dhcp-config)#default-router 192.168.10.1

C3560(dhcp-config)#dns-server 114.114.114.114

C3560(dhcp-config)#exit

C3560(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.10

C3560(config)#ip dhcp pool vlan20_dhcp

C3560(dhcp-config)#network 192.168.20.0 255.255.255.0

C3560(dhcp-config)#default-router 192.168.20.1

C3560(dhcp-config)#dns-server 114.114.114.114

C3560(dhcp-config)#exit

C3560(config)#ip dhcp excluded-address 192.168.20.1 192.168.20.10

C3560(config)#ip dhcp pool vlan30_dhcp

C3560(dhcp-config)#network 192.168.30.0 255.255.255.0

C3560(dhcp-config)#default-router 192.168.30.1

C3560(dhcp-config)#dns-server 114.114.114.114

C3560(dhcp-config)#exit

C3560(config)#ip dhcp excluded-address 192.168.30.1 192.168.30.10

##设置三个端口fastEthernet 0/1-3为trunk

知识点：VLAN的封装类型，目前有ISL和802.1q(dot1q)两种协议，ISL是思科私有的VLAN封装协议，思科部分交换机支持ISL协议，使用该协议能提高VLAN传输性能。

C3560(config)#interface range fastEthernet 0/1-3

C3560(config-if-range)#switchport trunk encapsulation ?

dot1q Interface uses only 802.1q trunking encapsulation when trunking

C3560(config-if-range)#switchport trunk encapsulation dot1q

C3560(config-if-range)#switchport mode trunk

C3560(config-if-range)#exit

##开启三层路由功能

C3560>enable

C3560#configure terminal

C3560(config)#ip routing

##显示与维护

C3560#show running-config

C3560#show vtp status

Cisco C2960_01配置如下：

##设置VTP 域名名称及VTP Client

C2960_01>enable

C2960_01#vlan database

C2960_01(vlan)#vtp domain CCTV

C2960_01(vlan)#vtp client

C2960_01(vlan)#exit

##分配fa0/1-5端口给VLAN 10

C2960_01#configure terminal

C2960_01(config)#interface range fastEthernet 0/1-5

C2960_01(config-if-range)#switchport access vlan 10

C2960_01(config-if-range)#switchport mode access

C2960_01(config-if-range)#no shutdown

C2960_01(config-if-range)#exit

##设置fa0/24端口为trunk

C2960_01(config)#interface fastEthernet 0/24

C2960_01(config-if)#switchport mode trunk

C2960_01(config-if)#no shutdown

C2960_01(config-if)#exit

##显示与维护

C2960_01#show vlan

C2960_01#show running-config

C2960_01#show vtp status

Cisco C2960_02配置如下：

##设置VTP 域名名称及VTP Client

C2960_02>enable

C2960_02#vlan database

C2960_02(vlan)#vtp domain CCTV

C2960_02(vlan)#vtp client

C2960_02(vlan)#exit

##分配fa0/1-5端口给VLAN 10

C2960_02#configure terminal

C2960_02(config)#interface range fastEthernet 0/1-5

C2960_02(config-if-range)#switchport access vlan 10

C2960_02(config-if-range)#switchport mode access

C2960_02(config-if-range)#no shutdown

C2960_02(config-if-range)#exit

##设置fa0/24端口为trunk

C2960_02(config)#interface fastEthernet 0/24

C2960_02(config-if)#switchport mode trunk

C2960_02(config-if)#no shutdown

C2960_02(config-if)#exit

##显示与维护

C2960_02#show vlan

C2960_02#show running-config

C2960_01#show vtp status

Cisco C2960_03配置如下：

##设置VTP 域名名称及VTP Client

C2960_03>enable

C2960_03#vlan database

C2960_03(vlan)#vtp domain CCTV

C2960_03(vlan)#vtp client

C2960_03(vlan)#exit

##分配fa0/1-5端口给VLAN 10

C2960_03#configure terminal

C2960_03(config)#interface range fastEthernet 0/1-5

C2960_03(config-if-range)#switchport access vlan 10

C2960_03(config-if-range)#switchport mode access

C2960_03(config-if-range)#no shutdown

C2960_03(config-if-range)#exit

##设置fa0/24端口为trunk

C2960_03(config)#interface fastEthernet 0/24

C2960_03(config-if)#switchport mode trunk

C2960_03(config-if)#no shutdown

C2960_03(config-if)#exit

##显示与维护

C2960_03#show vlan

C2960_03#show running-config

C2960_03#show vtp status