Here i got problem to configure vlan on switch. VTP mode for switch3 is server while switch1 and switch2 are client. What i understand is if you want to create vlan, your vtp mode should be server but when i changed vtp mode for switch1 to server, then the configuration occured same with switch2 i.e.vlan 2 on switch1 for interface fa0/2 also configured automatically with same interface(int fa0/2) on switch 2.Since before this i used single switch for inter-vlan but nothing problem.So, do u know what i'm missing on this configuration or misunderstanding?I attached file for diagram and configuration. *using Boson software inter_vlan_config.txt