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Implementing: VTP VLAN Trunking Protocol

LAN Switching and Wireless – Chapter 4

ITE I Chapter 6

© 2006 Cisco Systems, Inc. All rights reserved.

Cisco Public

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VTP (VLAN Trunking Protocol)
 VTP is a Cisco proprietary protocol used to exchange VLAN information across trunk links.
 A switch can be in one of 3 VTP operating modes
Client Cannot create, modify or delete VLAN Server

Can create, modify & delete VLAN
Transparent Can create, modify, & delete LOCAL VLAN Forwards VTP advertisements.

ITE 1 Chapter 6

© 2006 Cisco Systems, Inc. All rights reserved.

Cisco Public

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Inc.  Verify VTP configuration Show VTP status Show interfaces trunk ITE 1 Chapter 6 © 2006 Cisco Systems. All rights reserved.VTP (VLANTrunking Protocol)  VTP pruning Limits unnecessary dissemination of VLAN information. Cisco Public 3 .

Cisco Public 4 . VTP Pruning.Objectives  Explain the role of VTP in a converged switched network  Describe the operation of VTP: VTP domains. VTP Modes. VTP Advertisements. All rights reserved.  Configure VTP on Catalyst switches. Inc. ITE 1 Chapter 6 © 2006 Cisco Systems.

Inc. All rights reserved.  Extended-range VLANs (IDs greater than 1005) are not supported by 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.  VTP only learns about normal-range VLANs (VLAN IDs 1 to 1005). ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 5 .

All rights reserved. Cisco Public 6 .VTP Benefits VTP provides:  VLAN configuration consistency across the network  Accurate tracking and monitoring of VLANs  Dynamic reporting of added VLANs across a network  Dynamic trunk configuration when VLANs are added to the network ITE 1 Chapter 6 © 2006 Cisco Systems. Inc.

Inc. All switches in a domain share VLAN configuration details using VTP advertisements. All rights reserved. A router or Layer 3 switch defines the boundary of each domain. ITE 1 Chapter 6 © 2006 Cisco Systems. VTP Advertisements-VTP uses a hierarchy of advertisements to distribute and synchronize VLAN configurations across the network. Cisco Public 7 .VTP Components VTP Domain-Consists of one or more interconnected switches.

or transparent. client.VTP Components VTP Modes. The server is where VLANs can be created. deleted. VTP Server-VTP servers advertise the VTP domain VLAN information to other VTP-enabled switches in the same VTP domain. All rights reserved. Inc. or renamed for the domain. ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 8 . VTP servers store the VLAN information for the entire domain in NVRAM.A switch can be configured in one of three modes: server.

A switch reset deletes the VLAN information. You must configure VTP client mode on a switch. or delete VLANs on a VTP client.VTP Components VTP Client-VTP clients function the same way as VTP servers. All rights reserved. Cisco Public 9 . change. but you cannot create. A VTP client only stores the VLAN information for the entire domain while the switch is on. Inc. ITE 1 Chapter 6 © 2006 Cisco Systems.

Transparent switches do not participate in VTP.VTP Components VTP Transparent-Transparent switches forward VTP advertisements to VTP clients and VTP servers. or deleted on transparent switches are local to that switch only. Inc. ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 10 . All rights reserved. renamed. VLANs that are created.

multicast. a switch floods broadcast.VTP Components VTP Pruning-VTP pruning increases network available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to reach the destination devices. All rights reserved. and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them. Inc. Without VTP pruning. Cisco Public 11 . ITE 1 Chapter 6 © 2006 Cisco Systems.

Inc. All rights reserved. Cisco Public 12 .Explain the Role of VTP in a Converged Switched Network  Explain the role of VTP in a multi-switch network ITE 1 Chapter 6 © 2006 Cisco Systems.

Describe the Operation of VTP  Describe the importance of the default VTP configuration ITE 1 Chapter 6 © 2006 Cisco Systems. Inc. All rights reserved. Cisco Public 13 .

All rights reserved. Inc.Describe the Operation of VTP  Explain the role of domains in VTP ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 14 .

Describe the Operation of VTP  Describe how VTP exchanges domain and VLAN information between switches in the same VTP domain ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 15 . All rights reserved. Inc.

Inc.Describe the Operation of VTP ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 16 . All rights reserved.

Inc. Cisco Public 17 . All rights reserved.Describe the Operation of VTP ITE 1 Chapter 6 © 2006 Cisco Systems.

Cisco Public 18 . Inc. All rights reserved.Configure VTP on the Switches in a Converged Network ITE 1 Chapter 6 © 2006 Cisco Systems.

All rights reserved. Cisco Public 19 .Configure VTP on the Switches in a Converged Network ITE 1 Chapter 6 © 2006 Cisco Systems. Inc.

Inc.Configure VTP on the Switches in a Converged Network ITE 1 Chapter 6 © 2006 Cisco Systems. Cisco Public 20 . All rights reserved.

All rights reserved. ITE 1 Chapter 6 © 2006 Cisco Systems. modify or delete VLAN Server Can create.Summary  VTP is a Cisco proprietary protocol used to exchange VLAN information across trunk links. & delete LOCAL VLAN Forwards VTP advertisements.  A switch can be in one of 3 VTP operating modes Client Cannot create. modify. Cisco Public 21 . modify & delete VLAN Transparent Can create. Inc.

Cisco Public 22 .  Verify VTP configuration Show VTP status Show interfaces trunk ITE 1 Chapter 6 © 2006 Cisco Systems. All rights reserved. Inc.Summary  VTP pruning Limits unnecessary dissemination of VLAN information.

Cisco Public 23 . All rights reserved.End Chapter 4 ITE 1 Chapter 6 © 2006 Cisco Systems. Inc.