networkig engineering

1. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public
ITE I Chapter 6 1
VTP

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ITE 1 Chapter 6 2
Dynamic Trunking Protocol

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ITE 1 Chapter 6 3
Dynamic Trunking Protocol

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ITE 1 Chapter 6 4
Dynamic Trunking Protocol

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ITE I Chapter 6 5
VTP

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ITE 1 Chapter 6 6
VLAN Trunking Protocol (VTP)
 What is VTP?
VTP allows a network manager to configure a switch so
that it will propagate VLAN configurations to other
switches in the network. The switch can be configured
in the role of a VTP server or a VTP client. VTP only
learns about normal-range VLANs (VLAN IDs 1 to
1005). Extended-range VLANs (IDs greater than 1005)
are not supported by VTP.

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ITE 1 Chapter 6 7
VLAN Trunking Protocol (VTP)

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ITE 1 Chapter 6 8
VLAN Trunking Protocol (VTP)

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ITE 1 Chapter 6 9
The VTP Domain
• Group of switches that exchange VLAN information
• VLANs administered centrally at a chosen switch

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ITE 1 Chapter 6 10
The VTP Protocol
Advertises VLAN configuration information
Maintains VLAN configuration consistency throughout a
common administrative domain
Sends advertisements on trunk ports only

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ITE 1 Chapter 6 11
VTP Modes
Client
• Cannot create, change,
or delete VLANs
• Forwards advertisements
• Synchronizes VLAN
configurations
• Does not save in
NVRAM
Transparent
• Creates, modifies, and deletes local VLANs
• Forwards advertisements
• Does not synchronize VLAN configurations
• Saves configuration in NVRAM
Server (default mode)
• Creates, modifies, and deletes VLANs
• Sends and forwards advertisements
• Synchronizes VLAN configurations
• Saves configuration in NVRAM

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ITE 1 Chapter 6 12
VTP Configuration Commands
Configuring VTP
Switch(config)# vtp domain name
Switch(config)# vtp mode mode
Switch(config)# vtp password password
Verifying VTP
show vtp status
show vtp counters

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ITE 1 Chapter 6 13
Verifying the VTP Configuration
Switch#show vtp status
VTP Version : 2
Configuration Revision : 28
Maximum VLANs supported locally : 1005
Number of existing VLANs : 17
VTP Operating Mode : Client
VTP Domain Name : BCMSN
VTP Pruning Mode : Enabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x45 0x52 0xB6 0xFD 0x63 0xC8 0x49 0x80
Configuration last modified by 10.1.1.1 at 8-12-05 15:04:49
Switch#
Switch#show vtp status

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Take care of revision
number

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Adding a Switch to an Existing VTP
Domain
Ensure a new switch has VTP revision 0 before adding it to a
network by converting its mode to transparent .

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LAB TIME

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LAB TIME
Dynamic Trunking Protocol DTP

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LAB TIME
Dynamic Trunking Protocol DTP

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LAB TIME
Dynamic Trunking Protocol DTP

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ITE 1 Chapter 6 20
LAB TIME
Dynamic Trunking Protocol DTP

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LAB TIME
Dynamic Trunking Protocol DTP

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LAB TIME
Dynamic Trunking Protocol DTP
DTP Verifications commands
• Sh run
• Sh run int fastx/x
• Sh Int Trunk
• Sh Int fastx/x switchport

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ITE 1 Chapter 6 23
LAB TIME
VLAN Trunking Protocol

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ITE 1 Chapter 6 24
LAB TIME
VLAN Trunking Protocol

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ITE 1 Chapter 6 25
LAB TIME
VLAN Trunking Protocol

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ITE 1 Chapter 6 26
LAB TIME
VTP – Verifications Commands

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LAB TIME
VTP – Verifications Commands

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LAB TIME
• Vlan creation
• Assign vlan to access port
• Create trunk port
• Add vlanto trunk port
• Remove vlan to trunk
• Configure dtp & vtp
Complete LAB

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