VTP

VTP distributes VLAN configuration across switches in the same domain (Cisco).

Updated: 2026-03-05

Definition

VLAN Trunking Protocol (VTP) can propagate VLAN definitions to other switches over trunk links.

It reduces manual VLAN configuration but can cause outages if misconfigured.

Key points

Cisco protocol for VLAN database distribution
Domain + revision number are critical
Often avoided in modern designs to reduce risk

Common mistakes

Higher revision number wiping VLANs in the domain.
Wrong domain/password causing inconsistent VLANs.

Related exams

Cisco CCNA (200-301)

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