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25. Describe the VTP Trunking Protocol

VTP advertisement

Multicasted by VTP server throughout a VTP domain
VTP is always carried on the management VLAN (for ethernet this is VLAN 1).
Could be used by VTP clients to request VLAN information
Only the native VLAN is carried on the link if a trunk link becomes an access link.
VTP transparent switches will pass VTP frames

Global information in a VTP advertisement

VTP domain name
VTP configuration revision number
Update identity
Update timestamp

VLAN information in a VTP advertisement

VLAN ID
VLAN name
VLAN type
VLAN state

Trunking mode

Auto
Desirable
Nonegotiate
Off
On

Exam 25

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