Vtp (Global Configuration) - Cisco Catalyst 3550 Command Reference Manual

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(4)EA1
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:
•
•
•
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:
•
•
•
Catalyst 3550 Multilayer Switch Command Reference
2-524
Modification
This command was first introduced.
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, VTP mode and VLAN configuration for the first 1005 VLANs are determined by
VLAN database information, and VLANs greater than 1005 are configured from 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 no be configured to re-enter it until you clear the nonvolatile RAM (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.
Chapter 2 Cisco IOS Commands
78-11195-09