?– Ensure that the VLANs are active on all the VTP server switches.
?– One of the switches must be a VTP server in the VTP domain. All VLAN changes must
be done on this switch to have them propagated to the VTP clients.
?– The VTP domain name must match, and it is case sensitive. For example, CISCO and
cisco are two different domain names.
?– Ensure that no password is set between the server and client. If any password is set,
ensure that it is the same on both sides. The password is also case sensitive.
?– Every switch in the VTP domain must use the same VTP version. VTP version 1
(VTPv1) and VTP version 2 (VTPv2) are not compatible on switches in the same VTP
domain. Do not enable VTPv2 unless every switch in the VTP domain supports
version 2.
NOTE VTPv2 is disabled by default on VTPv2-capable switches. When you
enable VTPv2 on a switch, every VTPv2-capable switch in the VTP domain enables
version 2. You can only con?¬?gure the version on switches in VTP server or
transparent mode.
84 Chapter 2: Medium-Sized Switched Network Construction
?– A switch that is in VTP transparent mode and uses VTPv2 propagates all VTP
messages, regardless of the VTP domain that is listed.
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