Vtp Configuration Guidelines; Domain Names - Cisco IE-4000 Software Configuration Manual

Configuring VTP
Information About Configuring VTP

Turn off VTP pruning by making all VLANs on the trunk of the switch upstream to the VTP transparent switch pruning
ineligible.
To configure VTP pruning on an interface, use the switchport trunk pruning vlan interface configuration command. VTP
pruning operates when an interface is trunking. You can set VLAN pruning-eligibility, whether or not VTP pruning is
enabled for the VTP domain, whether or not any given VLAN exists, and whether or not the interface is currently trunking.
Default VTP Settings
Feature
VTP domain name
VTP mode (VTP version 1 and version 2)
VTP mode (VTP version 3)
VTP version
MST database mode
VTP version 3 server type
VTP password
VTP pruning

VTP Configuration Guidelines

You use the vtp global configuration command to set the VTP password, the version, the VTP filename, the interface
providing updated VTP information, the domain name, and the mode, and to disable or enable pruning. The VTP
information is saved in the VTP VLAN database. When VTP mode is transparent, the VTP domain name and mode are
also saved in the switch running configuration file, and you can save it in the switch startup configuration file by entering
the copy running-config startup-config privileged EXEC command. You must use this command if you want to save
VTP mode as transparent if the switch resets.
When you save VTP information in the switch startup configuration file and restart the switch, the configuration is selected
as follows:

If the VTP mode is transparent in both the startup configuration and the VLAN database and the VTP domain name
from the VLAN database matches that in the startup configuration file, the VLAN database is ignored (cleared). 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 VTP mode or the domain name in the startup configuration do not match the VLAN database, the domain name
and the VTP mode and configuration for the first 1005 VLANs use the VLAN database information.

Domain Names

When configuring VTP for the first time, you must always assign a domain name. You must configure all switches in the
VTP domain with the same domain name. Switches in VTP transparent mode do not exchange VTP messages with other
switches, and you do not need to configure a VTP domain name for them.
Note: If NVRAM and DRAM storage is sufficient, all switches in a VTP domain should be in VTP server mode.
Caution: Do not configure a VTP domain if all switches are operating in VTP client mode. If you configure the domain,
it is impossible to make changes to the VLAN configuration of that domain. Make sure that you configure at least
one switch in the VTP domain for VTP server mode.
Default Setting
Null.
Server.
The mode is the same as the mode in VTP version 1 or 2 before
conversion to version 3.
Version 1.
Transparent.
Secondary.
None.
Disabled.
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