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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
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Chapter 8 Configuring VLANs
Using VTP
VTP Version
Follow these guidelines when deciding which VTP version to implement:
• All switches in a VTP domain must run the same VTP version.
• A VTP version 2-capable switch can operate in the same VTP domain as a switch running VTP
version 1 if version 2 is disabled on the version 2-capable switch. Version 2 is disabled by default.
• Do not enable VTP version 2 on a switch unless all of the switches in the same VTP domain are
version-2-capable. When you enable version 2 on a switch, all of the version-2-capable switches in
the domain enable version 2. If there is a version 1-only switch, it will not exchange VTP
information with switches with version 2 enabled.
• If there are Token Ring networks in your environment (TRBRF and TRCRF), you must enable VTP
version 2 for Token Ring VLAN switching to function properly. To run Token Ring and Token
Ring-Net, disable VTP version 2.
• Enabling or disabling VTP pruning on a VTP server enables or disables VTP pruning for the entire
VTP domain.
Default VTP Configuration
Table 8-5 shows the default VTP configuration.
Table 8-5 VTP Default Configuration
Feature Default Value
VTP domain name Null.
VTP mode Server.
VTP version 2 enable
state
Version 2 is disabled.
VTP password None.
VTP pruning Disabled.
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