Exclude vlan from VTP domain

Answered Question
Jun 11th, 2010

Is it possible to exclude a vlan from a vtp domain? I would like to add a vlan to the vtp server switch and NOT have it propagate to all client switches.

Thanks,

I have this problem too.
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Correct Answer by Giuseppe Larosa about 6 years 5 months ago

Hello Dan,

>> Is it possible to exclude a vlan from a vtp domain? I would like to add a vlan to the vtp server switch and NOT have it propagate to all client switches.

this is not possible.

some options:

ensure you still have another  VTP server  if so you can change mode to VTP transparent on device that needs this vlan

OR

consider the use of a routed link to an external switch

A L3 routed link is not part of vlans so it is not advertised by VTP in this way you could have your "private vlan"

note:

private vlans may be another way to do this but it should be checked if they are propagated by VTP or not.

Hope to help

Giuseppe

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Leo Laohoo Fri, 06/11/2010 - 21:33

Is it possible to exclude a vlan from a vtp domain? I would like to add a vlan to the vtp server switch and NOT have it propagate to all client switches.

Is this A VLAN in a number of VLANs or only ONE and only VLAN?  If you have only ONE VLAN then go Transparent mode.  If you have a group of VLANs and you just want to exclude one then in your allowed Trunks, just deny that VLAN you don't want to propagate.

Does this answer your question?

Correct Answer
Giuseppe Larosa Sat, 06/12/2010 - 02:45

Hello Dan,

>> Is it possible to exclude a vlan from a vtp domain? I would like to add a vlan to the vtp server switch and NOT have it propagate to all client switches.

this is not possible.

some options:

ensure you still have another  VTP server  if so you can change mode to VTP transparent on device that needs this vlan

OR

consider the use of a routed link to an external switch

A L3 routed link is not part of vlans so it is not advertised by VTP in this way you could have your "private vlan"

note:

private vlans may be another way to do this but it should be checked if they are propagated by VTP or not.

Hope to help

Giuseppe

Daniel Graham Sat, 06/12/2010 - 18:31

Thats what I was afraid of. I am not able to use a routed link in this setup unfortunately. I have never had a need for this before, thought I would check here as I did not figure out a way to do it.

Thanks for everyones input. I can exclude vlan on trunks so it cant be used on other areas of the network, but I'd rather not do so. I will figure something out.

Thanks again.

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