VTP is used to distribute and synchronize VLAN information throughout a switched network. Switches can operate in server, client, or transparent mode. Server switches can create and modify VLANs, while clients and transparent switches can only modify VLANs locally. VTP pruning conserves bandwidth by not flooding VLAN traffic to ports that are not assigned to that VLAN. The show vtp commands are used to verify and troubleshoot the VTP configuration.

1. Implement VTP LAN Switching and Wireless – Chapter 4

2. Objectives Explain the role of VTP in a converged switched network Describe the operation of VTP: VTP domains, VTP Modes, VTP Advertisements, and VTP Pruning . Configure VTP on the switches in a converged network.

3. What Is an End-to-End VLAN? Users are grouped into VLANs independent of physical location. If users are moved within the campus, their VLAN membership remains the same .

5. VTP Review VTP (VLAN Trunking Protocol) is used to distribute and synchronize information about VLANs that are configured throughout a switched network. Switches transmit VTP messages only on 802.1Q and ISL trunks . Note : VTP is not required to configure trunking between switches, but is used to simplify VLAN management. VTP Server This has a default VTP mode. VLANs can be created, modified, and deleted. VTP Client This behaves like a VTP server without the ability to create, change, or delete VLANs. VTP Transparent Switches in the VTP Transparent mode do not participate in VTP.

6. VTP Operation VTP advertisements are sent as multicast frames. VTP servers and clients are synchronized to the latest revision number. VTP advertisements are sent every 5 minutes or when there is a change.

7. Describe the Operation of VTP

8. Describe the Operation of VTP: Domain

9. Describe the Operation of VTP: Advertisements

10. Operation of VTP: Modes

11. Operation of VTP: Modes

12. Operation of VTP: pruning functions

13. VTP Pruning Uses bandwidth more efficiently by reducing unnecessary flooded traffic Example: Station A sends broadcast; broadcast flooded only toward any switch with ports assigned to the red VLAN Switch(config)# vtp pruning Pruning Disabled Pruning Enabled

14. Configure VTP on the Switches Switch#vlan database Switch(vlan)#vtp v2-mode Switch(vlan)#vtp domain cisco Switch(vlan)#vtp {client | server | transparent}

15. Configure VTP on the Switches in a Converged Network Identify and troubleshoot common VTP configuration problems

16. Reviewing VTP DLSwitchA# show vtp status VTP Version : 2 Configuration Revision : 0 Maximum VLANs supported locally : 1005 Number of existing VLANs : 5 VTP Operating Mode : Server VTP Domain Name : VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0xB7 0x5D 0xB6 0x6D 0xE0 0xC0 0x3E 0x2E Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00 Local updater ID is 10.1.1.250 on interface Vl1 (lowest numbered VLAN interface found) Since no VLAN configurations were made, all settings will be the defaults. Notice the VTP mode is Server . The number of existing VLANs is the five built-in (reserved) VLANs. VLAN 1, 1002, 1003, 1004, 1005

17. Summary 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.

18. Summary VTP pruning Limits unnecessary dissemination of VLAN information. Verify VTP configuration Show VTP status Show VTP counters Show interfaces trunk