VTP
Caution
VTP Melts Networks.
See VTP Bomb.
VTP — Vlan Trunk Protocol
- Cisco proprietary
- Runs on trunk ports
- Comes in three versions
- Defaults to v1
Design guidance
transparent or off.
See BRKENS-2031.
Modes
Server
- Create, Modify, Delete
- Default
- Other Servers can modify based on Revision
Client
- Gets VLANs from a server
Transparent
- Don’t program the control plane of this device with any recieved VTP packets
- Forward any received VTP packets recieved to other trunk links
- A version 2 thing
Off
- Don’t program the control plane
- Do not forward VTP
Version 3
- Saves VLANS to
vlan.dat - Primary and secondary servers
- Default is secondary
- Private VLANs
- Extended VLANs
- 1006 to 4094
- Propigating MST info
References
Configure VTP - VLAN Configuration Guide - IOS XE 17.18.x - Cisco
Cisco Live - Enterprise Campus Design - Marcin Hamróz, and Jarosław Gawron - BRKENS-2031