Cisco Catalyst 3750 Command Reference Manual page 664

vtp (global configuration)
Defaults
The default filename is flash:vlan.dat.
The default mode is server mode.
No domain name or password is defined.
No password is configured.
Pruning is disabled.
The default version is Version 1.
Command Modes
Global configuration
Command History Release
12.1(11)AX
Usage Guidelines When you save VTP mode, domain name, and VLAN configurations in the switch startup configuration
file and reboot the switch, the VTP and VLAN configurations are selected by these conditions:
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The vtp file filename cannot be used to load a new database; it renames only the file in which the existing
database is stored.
Follow these guidelines when configuring a VTP domain name:
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Follow these guidelines when setting VTP mode:
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Catalyst 3750 Switch Command Reference
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Modification
This command was introduced.
If both the VLAN database and the configuration file show the VTP mode as transparent and the
VTP domain names match, the VLAN database is ignored. The VTP and VLAN configurations in
the startup configuration file are used. The VLAN database revision number remains unchanged in
the VLAN database.
If the startup VTP mode is server mode, or the startup VTP mode or domain names do not match the
VLAN database, VTP mode and VLAN configuration for the first 1005 VLANs are selected by
VLAN database information, and VLANs greater than 1005 are configured from the switch
configuration file.
The switch is in the no-management-domain state until you configure a domain name. While in the
no-management-domain state, the switch does not send any VTP advertisements even if changes
occur to the local VLAN configuration. The switch leaves the no-management-domain state after it
receives the first VTP summary packet on any port that is trunking or after you configure a domain
name by using the vtp domain command. If the switch receives its domain from a summary packet,
it resets its configuration revision number to 0. After the switch leaves the no-management-domain
state, it can no be configured to re-enter it until you clear the NVRAM and reload the software.
Domain names are case-sensitive.
After you configure a domain name, it cannot be removed. You can only reassign it to a different
domain.
The no vtp mode command returns the switch to VTP server mode.
The vtp mode server command is the same as no vtp mode except that it does not return an error
if the switch is not in client or transparent mode.
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
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