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Configuring VTP
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:
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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.
For complete information on configuring VLANs, see
Note
These sections describe how VTP works:
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78-12647-02
Understanding How VTP Works, page 9-1
Default VTP Configuration, page 9-5
VTP Configuration Guidelines, page 9-5
Configuring VTP, page 9-5
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
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
C H A P T E R
Chapter 10, "Configuring VLANs."
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9-1
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