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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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Cisco Public 3 .  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. Inc.

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

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

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

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

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

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

ITE 1 Chapter 6 © 2006 Cisco Systems. Without VTP pruning. Cisco Public 11 . and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them.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. a switch floods broadcast. multicast. All rights reserved. Inc.

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. Inc. Cisco Public 12 . All rights reserved.

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

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

Inc.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. All rights reserved. Cisco Public 15 .

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

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

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

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

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

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

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

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