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Zohaib Khan

VTP clients is not update its VLAN database from the VTP server?

Hi guyz,

I am facing an issue i just install a 2950 series switch run Version 12.1(22)EA4 in  my network, i configured the vtp version 1 as clinet mode and change VTP domain name to my current domain name....Trunk is up but no VLAN transfer i already done some troubleshooting adding vlan on VTP server to change its revision number but still same no vlan

Client vtp status:

VTP Version                     : 2

Configuration Revision          : 0

Maximum VLANs supported locally : 64

Number of existing VLANs        : 5

VTP Operating Mode              : Client

VTP Domain Name                 : local

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0x24 0xDA 0x7C 0x1F 0x01 0x3C 0xD6 0xCD

Server VTP status:

VTP Version capable             : 1 to 3

VTP version running             : 1

VTP Domain Name                 : local

VTP Pruning Mode                : Disabled

VTP Traps Generation            : Enabled

Device ID                       : e4c7.22a9.edc0

Feature VLAN:


VTP Operating Mode                : Server

Maximum VLANs supported locally   : 1005

Number of existing VLANs          : 14

Configuration Revision            : 21

MD5 digest                        : 0xA2 0x9B 0x4F 0xB6 0x58 0x78 0xFB 0x89

                                    0xF7 0x61 0xF2 0x7B 0x55 0x5A 0xFF 0xD0

Trunking is up as command on client switch

Date-SW#sh int trunk

Port        Mode         Encapsulation  Status        Native vlan

Fa0/24      desirable    802.1q         trunking      1

Port      Vlans allowed on trunk

Fa0/24      1-4094

Port        Vlans allowed and active in management domain

Fa0/24      1

Port        Vlans in spanning tree forwarding state and not pruned

Fa0/24      1



Was is it a vtp password issue?


I also faced the same issue,initially my switch was in Client mode then not update VLAN database i tried all but no success.Then finally changed it to Transparent Mode and then its start working and VLAN also updated .I want to know the reason for these why it didn't work in Client Mode? 

I believe it has to do with the server to client VTP won't initiate, as initially there are 5 Vlans active in Client mode by default, and to reset the count would require to change the mode to Transparent in order to establish a successful join.


If we set VTP mode to client and then connected to existing working Core switch server Mode then why all vlans didn't synchronized it.As per my understanding if we set to Client mode sure his configuration revision number will be less than Server switch.when i changed it to transparent then only it start synchronizing why like this?
Appreciate if you can expedite on these.

Is password is compulsory while making vtp server because i have just made vtp domain and modes on every switch , so is there any issue of password if not configured