Cisco WS-C2980G Software Guide - Page 177
Understanding How VTP Version 1 and Version 2 Work
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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 Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. This chapter consists of these sections: • Understanding How VTP Version 1 and Version 2 Work, page 9-1 • Default VTP Version 1 and Version 2 Configuration, page 9-5 • VTP Version 1 and Version 2 Configuration Guidelines, page 9-6 • Configuring VTP Version 1 and Version 2, page 9-6 • Understanding How VTP Version 3 Works, page 9-13 • Default VTP Version 3 Configuration, page 9-22 • Configuring VTP Version 3, page 9-22 Understanding How VTP Version 1 and Version 2 Work 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. You can use VTP to manage VLANs 1-1005 in your network. (VTP version 1 and VTP version 2 do not support VLANs 1025-4094.) With VTP, you can make configuration changes centrally on one switch and have those changes automatically communicated to all the other switches in the network. Note For complete information on configuring VLANs, see Chapter 10, "Configuring VLANs." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-1
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