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Zohaib Khan
Beginner

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

1 ACCEPTED SOLUTION

Accepted Solutions
JohnTylerPearce
Rising star

Zohaib,

Can you verify that the passwords on the client and server match?

On the VTP Client, can you post 'show vtp statistics?

View solution in original post

20 REPLIES 20
JohnTylerPearce
Rising star

Zohaib,

Can you verify that the passwords on the client and server match?

On the VTP Client, can you post 'show vtp statistics?

View solution in original post

thanks for replying

no password is configured on server neither on client

VTP statistics:

Summary advertisements received    : 64

Subset advertisements received     : 32

Request advertisements received    : 0

Summary advertisements transmitted : 29

Subset advertisements transmitted  : 2

Request advertisements transmitted : 33

Number of config revision errors   : 0

Number of config digest errors     : 32

Number of V1 summary errors        : 0

Is the server switch a Nexus ?

If so can you post a "sh int trunk" from the server switch side ?

Jon

Actually i m not directly connected with server switch

Server(Catalyst 4500)-------------------> Client(Catalyst 2960x)------------------->Client(Catalyst2950 (New Installed))

Trunking status on middle one (Gi1/0/2 port is connected to new switch)

Port        Mode             Encapsulation  Status        Native vlan

Gi1/0/2     desirable        802.1q         trunking      1

Gi1/0/4     on               802.1q         trunking      1

Gi1/0/11    on               802.1q         trunking      1

Po5         on               802.1q         trunking      1

Po20        on               802.1q         trunking      1

Port        Vlans allowed on trunk

Gi1/0/2     1-4094

Gi1/0/4     1-4094

Gi1/0/11    1-4094

Po5         1-4094

Po20        10,20,30

Port        Vlans allowed and active in management domain

Gi1/0/2     1,10,20,30,40,50,100-101,200,777

Gi1/0/4     1,10,20,30,40,50,100-101,200,777

Gi1/0/11    1,10,20,30,40,50,100-101,200,777

Po5         1,10,20,30,40,50,100-101,200,777

Po20        10,20,30

Port        Vlans in spanning tree forwarding state and not pruned

Gi1/0/2     1,10,20,30,40,50,100-101,200,777

Gi1/0/4     1,10,20,30,40,50,100-101,200,777

Gi1/0/11    1,10,20,30,40,50,100-101,200,777

Po5         1,10,20,30,40,50,100-101,200,777

Can you post a "sh vtp status" from the intermediate switch ?

Jon

Okay, you have just updated your post so my answer makes no sense.

Can you try reconfiguring the new switch and make sure when you type in the domain name there are no spaces etc.

Jon

sorry my last post is from backup sorry for that now its has been corrected

Domain Name is same

SW-2960#sh vtp status

VTP Version capable             : 1 to 3

VTP version running             : 1

VTP Domain Name                 : local

VTP Pruning Mode                : Disabled

VTP Traps Generation            : Disabled

Device ID                       : 189c.5d25.4780

Configuration last modified by 172.17.0.3 at 3-3-14 12:24:08

Feature VLAN:

--------------

VTP Operating Mode                : Client

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

Zohaib,

What is your configure the switch from client to transparent, then back to client. Once you're back into client mode, configure the domain name like Jon suggested with no spaces,

Already checked still same no issue with domain name

i think that is the issue

Number of config digest errors     : 32

but dont khow the solution

Zohaib.

I noticed that earlier. Can you run 'show vtp password' on each witch and verify everything looks good.

Thanks all for your Help

Thank all !

exactly ! wrong password vtp.

Thanks for your prompt input, it was kind of silly and frustrating from me to join the switch to the existing vtp domain server as I thought no password was implemented in my case.

 

 

 

Kind Regards,

Abdulla Sharaf

Solved           

Got Help from

Troubleshooting VLAN Trunk Protocol (VTP)

The general purpose of an MD5 value is to verify the

integrity of a  received packet and to detect any

changes to the packet or corruption of  the packet

during transit. When a switch detects a new

revision number  that is different from the currently

stored value, the switch sends a  request message to

the VTP serverand requests the VTP subsets. A subset

advertisement contains a list of VLAN information.

The switch  calculates the MD5 value for the subset

advertisements and compares the  value to the MD5

value of the VTP summary advertisement. If the two 

values are different, the switch increases the

No of config digest errors counter.A  common reason

for these digest errors is that the VTP password is not

configured consistently on all VTP servers in the VTP

domain. Troubleshoot theseerrors as a misconfiguration

or data corruption issue. You  can issus a show vtp password,

to verify what the password is on the device generating

the error, and then use the vtp password command to 

reset it ot the correct value, if in fact it had been changed.