实验46:VTP 配置
1. 实验目的
通过本实验，读者可以掌握如下技能：
（1） 理解VTP 的三种模式
（2） 熟悉VTP 的配置
2. 实验拓扑
拓扑图
3. 实验步骤
注：
1.VTP 修剪和VTP 版本只需要在一个VTP server 进行即可，其他server 或者client
会自动跟着更改。VTP 修剪是为了防止不必要的流量从trunk 链路上通过，通常需要启用。
2.有的IOS 版本可以在全局模式下配置vlan，我用的这个只支持在vlan database 下配置vlan。
3. 把三台交换机的配置清除干净，重启交换机
delete flash:vlan.dat
erase startup-config
reload
sw1:server
sw2:client
sw3;transparent
sw1(vlan)#vtp ser//以上配置S1 为VTP server，实际上这是默认值
Device mode already VTP SERVER.
sw1(vlan)#vtp domain cisco//以上配置VTP 域名
Changing VTP domain name from NULL to cisco
sw1(vlan)#vtp password cisco//以上配置VTP 的密码，目的是为了安全，防止不明身份的交换机加入到域中
Setting device VLAN database password to cisco.
sw1(vlan)#vlan 2 name ke
VLAN 2 added:
Name: ke
sw1(vlan)#exit
APPLY completed.
Exiting....
sw1#vlan da
sw1(vlan)#vlan 3 name haojian
VLAN 3 added:
Name: haojian
sw1(vlan)#exit
APPLY completed.
Exiting....
sw1#sh vlan
sw1#sh vtp status
VTP Version : 2//该VTP 支持版本2
Configuration Revision : 2/修订号为2，该数值非常重要
Maximum VLANs supported locally : 256
Number of existing VLANs : 7//VLAN 数量
VTP Operating Mode : Server//VTP 模式
VTP Domain Name : cisco VTP 域名
VTP Pruning Mode : Disabled//VTP 修剪没有启用
VTP V2 Mode : Disabled//VTP 版本2 没有启用，现在是版本1
VTP Traps Generation : Disabled
MD5 digest : 0x35 0x3A 0x41 0x40 0x4F 0x41 0xC4 0xAE
Configuration last modified by 0.0.0.0 at 3-1-02 00:09:45
Local updater ID is 0.0.0.0 (no valid interface found)
sw1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
sw1(config)#exit
sw1#
*Mar 1 00:11:54.643: %SYS-5-CONFIG_I: Configured from console by console
sw1#vlan da
sw1(vlan)#vtp pruning
Pruning switched ON//VTP 修剪启用
sw1(vlan)#exit
APPLY completed.
Exiting....
sw1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
w2#vlan da
sw2(vlan)#vtp client
Setting device to VTP CLIENT mode.
sw2(vlan)#vtp domain cisco
Changing VTP domain name from NULL to cisco
sw2(vlan)#vtp pass cisco
Setting device VLAN database password to cisco.
sw2(vlan)#exit
In CLIENT state, no apply attempted.
Exiting....
sw2#sh vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
2 VLAN0002 active ke
3 VLAN0003 active haojian
1002 fddi-default act/unsup
//可以看到SW2 已经学习到了在SW1 上创建的VLAN 了。
sw2#sh vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 256
Number of existing VLANs : 5
VTP Operating Mode : Client
VTP Domain Name : cisco
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0xDC 0x3B 0x6E 0x23 0xBA 0x87 0x07 0x99
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00
sw2#
Sw3#vlan
*Mar 1 00:06:12.307: %SYS-5-CONFIG_I: Configured from console by consoleda
sw3(vlan)#vtp transparent
Setting device to VTP TRANSPARENT mode.
sw3(vlan)#vtp domain cisco
Changing VTP domain name from NULL to cisco
sw3(vlan)#vtp password cisco
Setting device VLAN database password to cisco.
sw3(vlan)#exit
APPLY completed.
Exiting....
sw3#sh vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 256
Number of existing VLANs : 5
VTP Operating Mode : Transparent
VTP Domain Name : cisco
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0xDC 0x3B 0x6E 0x23 0xBA 0x87 0x07 0x99
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00
S3#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
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
本文转自gauyanm 51CTO博客，原文链接：http://blog.51cto.com/gauyanm/242940，如需转载请自行联系原作者
