Figure 2-11 shows how you can use VTP to manage VLANs
between switches.
Figure 2-11 VTP
A VTP domain is one switch or several interconnected switches sharing the same VTP
environment. You can con?¬?gure a switch to be in only one VTP domain.
By default, a Cisco Catalyst switch is in the no-management-domain state until it receives
an advertisement for a domain over a trunk link or until you con?¬?gure a management
domain. Con?¬?gurations made to a VTP server are propagated across trunk links to all the
connected switches in the network.
VTP Modes
VTP operates in one of three modes: server, transparent, or client. You can complete
different tasks depending on the VTP operation mode. The characteristics of the three VTP
modes are as follows:
?– Server: The default VTP mode is server mode, but VLANs are not propagated over the
network until a management domain name is speci?¬?ed or learned. When you change
(create, modify, or delete) the VLAN con?¬?guration on a VTP server, the change is
propagated to all switches in the VTP domain. VTP messages are transmitted out of all
the trunk connections. A VTP server synchronizes its VLAN database ?¬?le with other
VTP servers and clients.
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