Cisco WS-C4003 Software Guide - Page 153
Configuring VTP, Understanding How VTP Works
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Configuring VTP CH A P T E R 9 This chapter describes how to configure the VLAN Trunking Protocol (VTP) on the Catalyst enterprise LAN switches. Note For complete syntax and usage information for the commands used in this chapter, refer to the Command Reference-Catalyst 4000 Family, Catalyst 2948G, and Catalyst 2980G Switches. This chapter consists of these sections: • Understanding How VTP Works, page 9-1 • Default VTP Configuration, page 9-5 • VTP Configuration Guidelines, page 9-5 • Configuring VTP, page 9-5 Understanding How VTP Works Before you create virtual LANs (VLANs), you must decide whether to use VTP in your network. With VTP, you can make configuration changes centrally on one or more switches and have those changes automatically communicated to all the other switches in the network. VTP is a Layer 2 messaging protocol that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of VLANs on a network-wide basis. VTP minimizes misconfigurations and configuration inconsistencies that can result in a number of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations. Note For complete information on configuring VLANs, see Chapter 10, "Configuring VLANs." These sections describe how VTP works: • VTP Domain, page 9-2 • VTP Modes, page 9-2 • VTP Advertisements, page 9-2 • VTP Version 2, page 9-3 • VTP Pruning, page 9-3 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 9-1
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