If there is only one switch acting as a server in a VTP domain, what happens if this switch is turned off? Do all the other client switches loose their vlan information?
If VTP server is turned off the network and that time VTP client switch is up and running there will be no affect but if VTP client switch gets reloaded at that time when VTP server is not available then it will loose all vlan information.
The reason is vlan information on client switches are stored in DRAM and when they reloaded they try to fetch the information from server switch and when server switch is not available they do not get vlan information and loose vlan information. Try avoiding this situation and always keep atleast 2 VTP server available as a backup.
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