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VTP subset advertisements

I'm trying to get a better understanding of VTP subset advertisements. When a vlan has been changed or added or deleted, the configuration revision number is incremented on the local switch. Other switches in the same VTP domain will send a request message after seeing the summary advertisement from the local switch. The question is: Does the local switch have to send a subset advertisement for ALL vlans, or just the vlan that was added/modified/deleted?

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Community Member

Re: VTP subset advertisements

I understand it is the entire list of VLANs as the VTP subset advertisement has no field to indicate what the change was. For example, if a VLAN has been deleted there is no field to indicate so.

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