Cisco VTP中继协议配置实践1. 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2. 设计思路及需求：1、 Cisco C3560配置成为VTP server并设置VTP管理域名称CCTV2、 Cisco C3560 创建三个 VLAN(VLAN10 VLAN20 VLAN 30)并配置每个 VLAN 动 态获取IP3、 Cisco C3650 分配三个端口 fa 0/1-3 设置为 trunk4、 三台 Cisco C2960 配置成为 VTP client5、 C2960_01 分配 fa 0/1-5 给 VLAN 10，并设置 faO/24 端口为 trunk6、 C2960_02 分配 fa 0/1-5 给 VLAN 20，并设置 fa0/24 端口为 trunk7、 C2960_03 分配 fa 0/1-5 给 VLAN 30，并设置 fa0/24 端口为 trunk3. 网络拓扑图：faO/1faO/24□□：6D r 估0/2feO/242960I24TT C296B_03 faO/1PC-PT vlan30_dhcpfiaO/24)_01 faO/12960I24TT C29FOPT vlanl0_dh cpPC-PT vlan20_dhcpw296DI24TTC2963_O2faO/14.配置(1) Cisco C3560 配置如下：##设置VTP域名名称及VTP ServerC3560>e nableC3560#vla n databaseC3560(vla n)#vtp doma in CCTVC3560(vla n)#vtp server##创建 VLAN 10 VLAN 20 VLAN 30C3560(vla n)#vla n 10 n ame VLAN10C3560(vlan)#vlan 20 name VLAN20C3560(vlan)#vlan 30 name VLAN30C3560(vla n)#exit##VLAN配置IP地址3560#c on figu re terminalC3560(co nfig)#i nter face vla n 10C3560(config-if)#ip address 192.168.10.1 255.255.255.0C3560(c on fig-if)#exitC3560(co nfig)#i nter face vla n 20C3560(c on fig-if)#ip add ress 192.168.20.1 255.255.255.0C3560(c on fig-if)#exitC3560(co nfig)#i nter face vla n 30C3560(c on fig-if)#ip add ress 192.168.30.1 255.255.255.0C3560(c on fig-if)#exit##配置DCHPC3560(c on fig)#se rvice dhcpC3560(config)#ip dhcp pool vlan10_dhcpC3560(dhcp-co nfig)# netwo rk 192.168.10.0 255.255.255.0C3560(dhcp-co nfig)#default-route r 192.168.10.1C3560(dhcp-c on fig)#d ns-se rver 114.114.114.114C3560(dhcp-co nfig)#exitC3560(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.10C3560(c on fig)#ip dhcp pool vla n20_dhcpC3560(dhcp-co nfig)# netwo rk 192.168.20.0 255.255.255.0C3560(dhcp-co nfig)#default-route r 192.168.20.1C3560(dhcp-c on fig)#d ns-se rver 114.114.114.114C3560(dhcp-co nfig)#exitC3560(config)#ip dhcp excluded-address 192.168.20.1 192.168.20.10C3560(c on fig)#ip dhcp pool vla n30_dhcpC3560(dhcp-co nfig)# netwo rk 192.168.30.0 255.255.255.0C3560(dhcp-co nfig)#default-route r 192.168.30.1C3560(dhcp-c on fig)#d ns-se rver 114.114.114.114C3560(dhcp-co nfig)#exitC3560(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(c on fig)#i nter face range fastEthe rnet 0/1-3C3560(config-if-range)#switchport trunk encapsulation ?dot1q Inter face uses only 802.1q trunking en capsulati on whe n trunkingC3560(config-if-range)#switchport trunk encapsulation dot1qC3560(c on fig-if-ran ge)#switchpo rt mode trunkC3560(c on fig-if-ran ge)#exit##开启三层路由功能C3560>e nableC3560#c on figu re terminalC3560(c on fig)#ip ro ut ing##显示与维护C3560#show runnin g-c onfigC3560#show vtp status(2) Cisco C296O_01 配置如下：##设置VTP域名名称及VTP ClientC2960_01>e nableC2960_01#vla n databaseC2960_01(vla n)#vtp doma in CCTVC2960_01(vlan)#vtp clientC2960_01(vla n)#exit## 分配 fa0/1-5 端口给 VLAN 10C2960_01#c on figu re te rminalC2960_01(co nfig)#i nte rface ran ge fastEthe rnet 0/1-5C2960_01(config-if-range)#switchport access vlan 10C2960_01(c on fig-if-ran ge)#switchpo rt mode accessC2960_01(c on fig-if-ran ge)# no shutdow nC2960_01(c on fig-if-ran ge)#exit## 设置 fa0/24 端口为 trunkC2960_01(co nfig)#i nte rface fastEthe rnet 0/24C2960_01(c on fig-if)#switchp ort mode trunkC2960_01(c on fig-if)# no shutdow nC2960_01(c on fig-if)#exit##显示与维护C2960_01#show via nC2960_01#show runnin g-co nfigC2960_01#show vtp status(3) Cisco C2960_02 配置如下：##设置VTP域名名称及VTP ClientC2960_02>e nableC2960_02#vla n databaseC2960_02(vla n)#vtp doma in CCTVC2960_02(vla n)#vtp clie ntC2960_02(vla n)#exit## 分配 fa0/1-5 端口给 VLAN 10C2960_02#c onfigure terminalC2960_02(c on fig)#i nte rface range fastEthe rnet 0/1-5C2960_02(config-if-range)#switchport access vlan 10C2960_02(c on fig-if-ran ge)#switchpo rt mode accessC2960_02(c on fig-if-ran ge)# no shutdow nC2960_02(c on fig-if-ran ge)#exit## 设置 fa0/24 端口为 trunkC2960_02(co nfig)#i nte rface fastEthe rnet 0/24C2960_02(c on fig-if)#switchpo rt mode trunkC2960_02(c on fig-if)# no shutdow nC2960_02(c on fig-if)#exit##显示与维护C2960_02#show via nC2960_02#show runnin g-c onfigC2960_01#show vtp status(4) Cisco C296O_03 配置如下：##设置VTP域名名称及VTP ClientC2960_03>e nableC2960_03#vla n databaseC2960_03(vla n)#vtp doma in CCTVC2960_03(vla n)#vtp clie ntC2960_03(vla n)#exit## 分配 fa0/1-5 端口给 VLAN 10C2960_03#c onfigure terminalC2960_03(c on fig)#i nte rface range fastEthe rnet 0/1-5C2960_03(config-if-range)#switchport access vlan 10C2960_03(c on fig-if-ran ge)#switchpo rt mode accessC2960_03(c on fig-if-ran ge)# no shutdow nC2960_03(c on fig-if-ran ge)#exit## 设置 fa0/24 端口为 trunkC2960_03(co nfig)#i nte rface fastEthe rnet 0/24C2960_03(c on fig-if)#switchpo rt mode trunkC2960_03(c on fig-if)# no shutdow nC2960_03(co nfig-if)#exit##显示与维护C2960_03#show vla nC2960_03#show runnin g-c onfigC2960_03#show vtp status。