Domain Names For Configuring Vtp; Passwords For The Vtp Domain; Vtp Version - Cisco Catalyst 2960 series Configuration Manual

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VTP Configuration Guidelines

Domain Names for Configuring VTP

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.
If the NVRAM and DRAM storage is sufficient, all switches in a VTP domain should be in VTP server
Note
mode.
Do not configure a VTP domain if all switches are operating in VTP client mode. If you configure the
Caution
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.
Related Topics
Adding a VTP Client Switch to a VTP Domain, on page 33

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
Caution
do not assign a management domain password to each switch in the domain.
Related Topics
Configuring a VTP Version 3 Password, on page 27
Example: Configuring a Switch as the Primary Server, on page 36

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.
Catalyst 2960-X Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX
22
Configuring VTP
OL-29065

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