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Routing & Switching · Intermediate

VLAN Trunking Protocol (VTP)

A Cisco protocol that propagates VLAN definitions from a server to other switches in the same VTP domain.

Definition

VTP modes are server, client, transparent and off (v3). Switches synchronize based on configuration revision number, so inserting a switch with a higher revision can overwrite the domain's VLANs. VTPv3 adds a primary server role, extended VLAN support and MST/private VLAN propagation.

Example

vtp domain CORP / vtp mode transparent

Exam tip

Reset a new switch's revision to 0 (change domain or set transparent) before connecting it.

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