VTP domain

As explained in Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

A VTP domain is a group of switches in a LAN that share the same VTP domain name and VLAN configuration information.

A VTP domain groups LAN switches that share a VTP domain name and VLAN configuration information. Switches synchronize only with other switches in the same domain. By default, a switch has no domain name and is in domain NULL; it can change VLANs but does not send VTP messages. section 13.2.1 section 13.3

Configuring and verifying a domain

On SW1, configure `vtp domain Manning`, then create VLANs 2, 3, and 4. SW1 advertises the updated VLAN database through trunk ports. SW2 and SW3 join the Manning domain and synchronize when their revision number is lower. section 13.2.1

Figure 13.5 VLANs created on SW1 are propagated to other switches in the VTP domain “Manning.” (1) SW1 creates VLANs 2, 3, and 4, updating its revision number to 3 (incrementing by 1 each time it creates a VLAN). (2) SW1 sends VTP messages to other switches in the VTP domain. (3) SW2 and SW3 add VLANs 2, 3, and 4 to their VLAN databases, updating their revision number to match SW1’s.

The diagram traces VLANs 2, 3, and 4 from SW1 to SW2 and SW3, including the revision-number changes. section 13.2.1

How Acing the CCNA Exam: Volume 1 Fundamentals and Protocols covers it

How deep it goes

Defines membership, NULL state, trunk-based messaging, and revision-number synchronization without detailing VTP packet internals.

Examples

Uses the Manning domain, VLANs 2–4, SW1–SW3, and show vtp status output.

What you can do after

Configure a domain with vtp domain domain-name and verify membership with show vtp status.

How it connects

Connects VLAN databases, VTP revision numbers, trunk ports, and VTP operating modes.

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Related concepts

• primary serverhas part · A VTP primary server is the single VTP version 3 server in a domain authorized to create, modify, and delete VLANs.
• VTPconfigures · VTP is Cisco's protocol for distributing VLAN configuration information within a management domain.

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols. The section links point to the parts of the book it draws on.