i'm not experiance but i find some information may be help you
all cisco switches are configerd to be VTP server by default. to configer VTP, first you have to configer the domain name you want to use.
let switch S1 is server:
s1#config t
config)# vtp mode server
config)# vtp domain milan
config)# vtp password todd
another switches
vtp mode client
vtp domain milan
vtp password todd
be carefule the domain name must be the same and password in all switches
you can read chapter 9 in cybex book and you will find the all configration about VTP
and if you want to learn about the basics of VTP you must download the lesson by E.mohammed samir , lesson 16
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