following:
00D0.588F.B600.
throughout a common administration domain. VTP manages the additions, deletions, and name
changes of VLANs across multiple switches. VTP minimizes misconfigurations and
configuration inconsistencies that can cause problems, such as duplicate VLAN names or
incorrect VLAN-type specifications.
a switched network. Configurations made to a single switch, which is called the VTP server, are
propagated across trunk links to all switches in the same VTP domain. VTP allows switched
network solutions to scale to large sizes by reducing the manual configuration needs in the
network.
name. The network administrator chooses which switches are in the same domain by deciding
which switches share common VLANs. One switch is chosen and then configured as the VTP
server; then, the others are configured as clients for full VTP operation. (VTP transparent mode,
a third option, will be covered shortly.)
whenever there is a change in VLAN configurations. Included in a VTP advertisement is a
configuration revision number, as well as VLAN names and numbers, and information about
which switches have ports assigned to each VLAN. By configuring the details on one server and
propagating the information via advertisements, all switches know the names and numbers of
all VLANs.
revision number. Each time a VTP server modifies its VLAN information, it increments the
configuration revision number by one. The VTP server then sends out a VTP advertisement that
includes the new configuration revision number. When a switch receives a VTP advertisement
with a larger configuration revision number, it updates its VLAN configuration. Figure 4-30
illustrates how VTP operates in a switched network.