VTP不更新交换机中的VLAN

Question

交换机1将是服务器，交换机4将是客户端！

开关1配置

       S1#show run
   Building configuration...

Current configuration : 1451 bytes
!
version 16.3.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname S1
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet1/0/2
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet1/0/3
!
interface GigabitEthernet1/0/4
!
interface GigabitEthernet1/0/5
!
interface GigabitEthernet1/0/6
!
interface GigabitEthernet1/0/7
!
interface GigabitEthernet1/0/8
!
interface GigabitEthernet1/0/9
!
interface GigabitEthernet1/0/10
!
interface GigabitEthernet1/0/11
!
interface GigabitEthernet1/0/12
!
interface GigabitEthernet1/0/13
!
interface GigabitEthernet1/0/14
!
interface GigabitEthernet1/0/15
!
interface GigabitEthernet1/0/16
!
interface GigabitEthernet1/0/17
!
interface GigabitEthernet1/0/18
!
interface GigabitEthernet1/0/19
!
interface GigabitEthernet1/0/20
!
interface GigabitEthernet1/0/21
!
interface GigabitEthernet1/0/22
!
interface GigabitEthernet1/0/23
!
interface GigabitEthernet1/0/24
!
interface GigabitEthernet1/1/1
!
interface GigabitEthernet1/1/2
!
interface GigabitEthernet1/1/3
!
interface GigabitEthernet1/1/4
!
interface Vlan1
 no ip address
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
!
end







S1#show vtp st
        S1#show vtp status 
        VTP Version capable             : 1 to 2
        VTP version running             : 2
        VTP Domain Name                 : ccna
        VTP Pruning Mode                : Disabled
        VTP Traps Generation            : Disabled
        Device ID                       : 0030.A3BA.9100
        Configuration last modified by 0.0.0.0 at 3-1-93 00:41:16
        Local updater ID is 0.0.0.0 (no valid interface found)

        Feature VLAN : 
        --------------
        VTP Operating Mode                : Server
        Maximum VLANs supported locally   : 1005
        Number of existing VLANs          : 7
        Configuration Revision            : 7
        MD5 digest                        : 0x44 0xD7 0x99 0x68 0xF8 0x18 0x7F 0xBD 
                                            0xA4 0xDE 0xB5 0xC3 0x00 0x69 0xC3 0xC6 

开关4配置

  S4#show run
Building configuration...

Current configuration : 1390 bytes
!
version 16.3.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname S4
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet1/0/2
!
interface GigabitEthernet1/0/3
!
interface GigabitEthernet1/0/4
!
interface GigabitEthernet1/0/5
!
interface GigabitEthernet1/0/6
!
interface GigabitEthernet1/0/7
!
interface GigabitEthernet1/0/8
!
interface GigabitEthernet1/0/9
!
interface GigabitEthernet1/0/10
!
interface GigabitEthernet1/0/11
!
interface GigabitEthernet1/0/12
!
interface GigabitEthernet1/0/13
!
interface GigabitEthernet1/0/14
!
interface GigabitEthernet1/0/15
!
interface GigabitEthernet1/0/16
!
interface GigabitEthernet1/0/17
!
interface GigabitEthernet1/0/18
!
interface GigabitEthernet1/0/19
!
interface GigabitEthernet1/0/20
!
interface GigabitEthernet1/0/21
!
interface GigabitEthernet1/0/22
!
interface GigabitEthernet1/0/23
!
interface GigabitEthernet1/0/24
!
interface GigabitEthernet1/1/1
!
interface GigabitEthernet1/1/2
!
interface GigabitEthernet1/1/3
!
interface GigabitEthernet1/1/4
!
interface Vlan1
 no ip address
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
!
end 


S4#show vtp status 
VTP Version capable             : 1 to 2
VTP version running             : 2
VTP Domain Name                 : ccna
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : 0001.6436.1500
Configuration last modified by 0.0.0.0 at 3-1-93 00:15:42

Feature VLAN : 
--------------
VTP Operating Mode                : Client
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 5
Configuration Revision            : 1
MD5 digest                        : 0xA5 0xB4 0xB1 0x07 0x53 0x1C 0xB7 0x15 
                                    0x19 0x51 0x6B 0x51 0x4B 0xD0 0xD7 0xBA

Answer 1

要使VTP在VTP服务器和客户端之间工作，VTP域名和VTP密码必须匹配。您有相同的VTP域名(ccna)，但VTP密码不匹配。可以看出，由于MD5摘要不匹配，所以密码不匹配：

Switch 1: 0x44 0xD7 0x99 0x68 0xF8 0x18 0x7F 0xBD 0xA4 0xDE 0xB5 0xC3 0x00 0x69 0xC3 0xC6
Switch 4: 0xA5 0xB4 0xB1 0x07 0x53 0x1C 0xB7 0x15 0x19 0x51 0x6B 0x51 0x4B 0xD0 0xD7 0xBA

您可以在每个交换机上使用show vtp password命令查看在交换机上配置的密码。请记住，在密码之前或之后有一个空格是密码的一部分，而且很难判断是否是这样。此外，空白密码也是密码。

要修复它，可以复制一次密码，然后将其粘贴到两个开关中。这样，你就可以确保它们是一样的。