VTP v3 tidbit

Interesting bit with VTPv3. Error received while attempting to create a VLAN:

VTP VLAN configuration not allowed when device is not the primary server for vlan database.

You need to set one of the switches in the VTP domain as the primary vtp server.

Image 1

Setting vtp mode server alone will not allow you to create VLANs. You will get an error when you try to create a VLAN:

image 2

Error:

VTP VLAN configuration not allowed when device is not the primary server for vlan database.

To correct this, as stated earlier, you need to configure a primary VTP server, as shown below in EXEC mode:

image 3

SW1#vtp primary force
This system is becoming primary server for feature vlan
SW1#
*Oct 27 21:24:16.632: %SW_VLAN-4-VTP_PRIMARY_SERVER_CHG: aabb.cc00.0100 has become the primary server for the VLAN VTP feature

Once done you are then able to create vlans:

image 4

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