If the NVRAM and DRAM storage is sufficient, all switches in a VTP domain should be in VTP server
mode.
Note
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.
Caution
Related Topics
Adding a VTP Client Switch to a VTP Domain , on page 2102
Passwords for the VTP Domain
You can configure a password for the VTP domain, but it is not required. If you do configure a domain
password, all domain switches must share the same password and you must configure the password on each
switch in the management domain. Switches without a password or with the wrong password reject VTP
advertisements.
If you configure a VTP password for a domain, a switch that is booted without a VTP configuration does not
accept VTP advertisements until you configure it with the correct password. After the configuration, the switch
accepts the next VTP advertisement that uses the same password and domain name in the advertisement.
If you are adding a new switch to an existing network with VTP capability, the new switch learns the domain
name only after the applicable password has been configured on it.
When you configure a VTP domain password, the management domain does not function properly if you
do not assign a management domain password to each switch in the domain.
Caution
Related Topics
Configuring a VTP Version 3 Password , on page 2095
Example: Configuring a Switch as the Primary Server, on page 2105
VTP Version
Follow these guidelines when deciding which VTP version to implement:
•
All switches in a VTP domain must have the same domain name, but they do not need to 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).
•
If a switch running VTP version 1, but capable of running VTP version 2, receives VTP version 3
advertisements, it automatically moves to VTP version 2.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
2091
Information About VTP
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