Cisco Catalyst 2950 Command Reference Manual page 578

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
12.0(5.2)WC(1)
12.1(6)EA2
12.1(9)EA1
12.1(11)EA1
Usage Guidelines When you save VTP mode and domain name and VLAN configurations in the switch startup
configuration file and reboot the switch, the VTP and VLAN configurations are determined by these
conditions:
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•
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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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Catalyst 2950 and Catalyst 2955 Switch Command Reference
2-552
Modification
This command was introduced.
The if-id keyword was added.
The domain and mode keywords were added. The if-id keyword was
replaced by the interface keyword.
The password, pruning, and version keywords were added.
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, the VTP mode and VLAN configuration information for the first 1005 VLAN IDs
are determined by VLAN database information, and configuration for VLAN IDs greater than 1005
is determined by the switch configuration file.
If the image on the switch or the configuration file is earlier than Cisco IOS Release 12.1(9)EA1,
the switch reboots using the information in the VLAN database.
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 not be configured to re-enter it until you clear the NVRAM and reload the software.
Domain names are case-sensitive.
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
OL-10102-01