Server mode is the default mode. In this mode, VTP servers have full control over VLAN creation and
modification for their domains. All VTP information is advertised to other switches in the domain, while all
received VTP information is synchronized with the other switches. Because it is the default mode, server
mode can be used on any switch in a management domain, even if other server and client switches are in use.
This mode provides some redundancy in the event of a server failure in the domain.