VTP Modes
Table 189: VTP Modes
DescriptionVTP Mode
In VTP server mode, you can create, modify, and delete VLANs, and specify other
configuration parameters (such as the VTP version) for the entire VTP domain. VTP servers
advertise their VLAN configurations to other switches in the same VTP domain and
synchronize their VLAN configurations with other switches based on advertisements received
over trunk links.
VTP server is the default mode.
In VTP server mode, VLAN configurations are saved in NVRAM. If the switch detects a
failure while writing a configuration to NVRAM, VTP mode automatically changes from
server mode to client mode. If this happens, the switch cannot be returned to VTP server
mode until the NVRAM is functioning.
VTP server
A VTP client functions like a VTP server and transmits and receives VTP updates on its
trunks, but you cannot create, change, or delete VLANs on a VTP client. VLANs are
configured on another switch in the domain that is in server mode.
In VTP versions 1 and 2 in VTP client mode, VLAN configurations are not saved in NVRAM.
In VTP version 3, VLAN configurations are saved in NVRAM in client mode.
VTP client
VTP transparent switches do not participate in VTP. A VTP transparent switch does not
advertise its VLAN configuration and does not synchronize its VLAN configuration based
on received advertisements. However, in VTP version 2 or version 3, transparent switches
do forward VTP advertisements that they receive from other switches through their trunk
interfaces. You can create, modify, and delete VLANs on a switch in VTP transparent mode.
When the switch is in VTP transparent mode, the VTP and VLAN configurations are saved
in NVRAM, but they are not advertised to other switches. In this mode, VTP mode and
domain name are saved in the switch running configuration, and you can save this information
in the switch startup configuration file by using the copy running-config startup-config
privileged EXEC command.
In a switch stack, the running configuration and the saved configuration are the same for
all switches in a stack.
VTP
transparent
A switch in VTP off mode functions in the same manner as a VTP transparent switch, except
that it does not forward VTP advertisements on trunks.
VTP off
Related Topics
Prerequisites for VTP
Configuring VTP Mode , on page 2093
Example: Configuring Switch as VTP Server, on page 2105
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
2086
Information About VTP
To Next Page
Loading...
Need help?
General
