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VLAN Trunking Protocol (VTP) (Modes (Server (default) (Can alter VLAN…
VLAN Trunking Protocol (VTP)
Features
Simplify VLAN configuration
same VLAN database in VTP domain
vlan.dat
New switches have a
null
domain
Inherits the VTP VLAN database
VLAN pruning
Switch stops traffic for unused VLANs
Rev is incremented as changes are made
Highest revision wins
ISL VLAN limitation
VTP v1 and v2 restrict VLANs to under 1000
Versions
Version 1 (Classic)
Version 2 (Token Ring)
Version 3
Manual configuration (no
null
domain)
All VLAN numbers supported
Secure password
Primary server
Protects against introducing higher rev num
Must demote primary to reassign
Private VLAN support
Lack of device support
Modes
Server (default)
Can alter VLAN database
Client
Cannot alter VLAN database
Transparent (v1, v2)
Pass VTP through (disables)
Off (v3)
Stops VTP traffic (disables)