Which IOS command configures the switch for the VTP mode that will propagate its VLAN database
changes to others in the domain?
Correct Answer: B
Explanation/Reference:
Explanation:
To configure a switch to operate as a VLAN Trunk Protocol (VTP) server, enter the vtp mode server
command at the global configuration prompt.
switch(config)# vtp mode server
There are three modes in VTP: server, client, and transparent. The main differentiator among the three
modes is whether a switch can create, modify, or delete VLANs. A Catalyst switch can create, modify, and
delete VLANs in server or transparent mode, but not in client mode. However, VLANs created on a switch
in transparent mode apply only to that switch, and information about these VLANs is not propagated
throughout the VTP domain.
The VTP server mode sends or forwards VTP advertisements, synchronizes VLAN configuration
information with other switches, and saves the VLAN in NVRAM.
The VTP transparent mode forwards VTP advertisements and saves the VLAN configuration in NVRAM. It
does not synchronize VLAN configuration information. A switch in transparent mode can create, delete,
and modify VLANs, but changes are not transmitted to other switches in the domain. Changes only affect
the local switch.
The VTP client mode sends or forwards VTP advertisements and synchronizes VLAN configuration
information with other switches. It does not save VLAN information in NVRAM. In client mode, VTP clients
only can receive VLAN information from VTP servers.
For added security, you can specify the VTP domain to which the client belongs and a password used to
connect to the domain when configuring a switch for VTP client mode. The password is the same for all
devices in the VTP domain. The commands to configure a VTP password are as follows:
switch(config)# vtp domain domain-name
switch(config)# vtp password password
The vtp v1-mode command reverts the VTP version to version 1 (the default version). Use the vtp v2-mode
command to set the VTP mode to version 2.
Objective:
Layer 2 Technologies
Sub-Objective:
Configure and verify trunking
References:
Cisco > Home > Support > Technology Support > LAN Switching > Virtual LANS/VLAN Trunking Protocol
(VLANS/VTP) > Design > Design Technotes > Understanding VLAN Trunk Protocol (VTP)
Cisco > Cisco IOS LAN Switching Command Reference > udld through vtp v2-mode > vtp