Cisco Systems 3560 Manual De Usuario
16-9
Catalyst 3560 Switch Software Configuration Guide
OL-8553-06
Chapter 16 Configuring VTP
Configuring VTP
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Do not enable VTP Version 2 on a switch unless all of the switches in the same VTP domain are
Version-2-capable. When you enable Version 2 on a switch, all of the Version-2-capable switches in
the domain enable Version 2. If there is a Version 1-only switch, it does not exchange VTP
information with switches that have Version 2 enabled.
Version-2-capable. When you enable Version 2 on a switch, all of the Version-2-capable switches in
the domain enable Version 2. If there is a Version 1-only switch, it does not exchange VTP
information with switches that have Version 2 enabled.
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If there are TrBRF and TrCRF Token Ring networks in your environment, you must enable VTP
Version 2 for Token Ring VLAN switching to function properly. To run Token Ring and Token
Ring-Net, disable VTP Version 2.
Version 2 for Token Ring VLAN switching to function properly. To run Token Ring and Token
Ring-Net, disable VTP Version 2.
Configuration Requirements
When you configure VTP, you must configure a trunk port so that the switch can send and receive VTP
advertisements to and from other switches in the domain.
advertisements to and from other switches in the domain.
For more information, see the
.
If you are configuring VTP on a cluster member switch to a VLAN, use the rcommand privileged EXEC
command to log in to the member switch. For more information about the command, see the command
reference for this release.
command to log in to the member switch. For more information about the command, see the command
reference for this release.
If you are configuring extended-range VLANs on the switch, the switch must be in VTP transparent
mode.
mode.
VTP does not support private VLANs. If you configure private VLANs, the switch must be in VTP
transparent mode. When private VLANs are configured on the switch, do not change the VTP mode from
transparent to client or server mode.
transparent mode. When private VLANs are configured on the switch, do not change the VTP mode from
transparent to client or server mode.
Configuring a VTP Server
When a switch is in VTP server mode, you can change the VLAN configuration and have it propagated
throughout the network.
throughout the network.
Note
If extended-range VLANs are configured on the switch, you cannot change VTP mode to server. You
receive an error message, and the configuration is not allowed.
receive an error message, and the configuration is not allowed.
Beginning in privileged EXEC mode, follow these steps to configure the switch as a VTP server:
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
vtp mode server
Configure the switch for VTP server mode (the default).
Step 3
vtp domain domain-name
Configure the VTP administrative-domain name. The name can be 1 to 32
characters. All switches operating in VTP server or client mode under the
same administrative responsibility must be configured with the same
domain name.
characters. All switches operating in VTP server or client mode under the
same administrative responsibility must be configured with the same
domain name.
Step 4
vtp password password
(Optional) Set the password for the VTP domain. The password can be 8 to
64 characters.
64 characters.
If you configure a VTP password, the VTP domain does not function
properly if you do not assign the same password to each switch in the
domain.
properly if you do not assign the same password to each switch in the
domain.