Vlan propergate

[SurajR]

Hi,

I have installed and setup a new Cisco 2069 switch and joined to our domain. recently I have noticed that Vlans have not copied over to this particular switch. I have created the Vlans on the core switch and all other switches have received this Vlan apart from this one.

Thanks

Suraj Rumpal

[Dennis Mink]

are you using VTP? and if so what is the new switch set to in terms of vtp?

[Julio E. Moisa]

Hi

What VTP version are you using? if you are using VTP ver 3 you should verify if the new switch supports it. Also verify:

- VTP mode

- VTP domain

- VTP password

- VTP version

it could be checked through: show vtp status

Hope it is useful

:-)

[SurajR]

Hi Dennis and Julia,

See below output from a working switch and I can see the vlan I created on the core switch:

SBC-SW04#sh vtp st
SBC-SW04#sh vtp status
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : gs_sbc.local
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Enabled
Device ID                       : 1ce6.c72f.6800
Configuration last modified by 10.40.101.10 at 2-10-18 15:03:49

Feature VLAN:
--------------
VTP Operating Mode                : Client
Maximum VLANs supported locally   : 255
Number of existing VLANs          : 40
Configuration Revision            : 9
MD5 digest                        : 0x90 0x43 0x61 0x6F 0x4B 0x08 0xDC 0x10
                                    0xEB 0x5E 0x0B 0x48 0xAA 0x58 0x75 0xA5
SBC-SW04#

Now see the output from the switch that has not got the Vlan I created.

SBCSW246>sh vtp status
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : gs_sbc.local
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : 2c86.d25a.9f00
Configuration last modified by 10.40.101.10 at 8-15-17 08:06:18

Feature VLAN:
--------------
VTP Operating Mode                : Client
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 39
Configuration Revision            : 8
MD5 digest                        : 0xF2 0x34 0xFA 0x61 0xBC 0x4B 0x99 0xD6
                                    0xDE 0x3D 0x28 0xB5 0x7F 0x5D 0x36 0xC7
SBCSW246>

Thanks

Suraj Rumpal

[Deepak Kumar]

Hi, 

Please verify below points:

VTP password:

Trunk port between VTP server and client

any other switch between server and client, if any then that will not in off mode.

If all things seem ok then, please run debug command as

debug sw-vlan vtp <event and packets>

regards,

Deepak Kumar

[Julio E. Moisa]

Hi

Change the password to other not used string like Null and save then set up the proper password and try again, note the MD5 digest is different, it must be the same on both switches, you can see the password through:

show vtp password

:-)

[SurajR]

Hi,

I have changed the VTP password but this still has not downloaded the changes.

i have noticed that the configuration revision number is 0 but all my other switches are showing 9.

could that be the issue.

[SurajR]

HI,

Do we have any update or any more checks that we can do.

[Mark Malone · Accepted solution]

revisions numbers should match and so should the md5 digest
can you post please from both sides of the trunks both switches as its is now ...

show int trunk
show vtp status
show vtp counters
show vtp password