What model switches are you stacking? If 3750s with stack cables, they will look like one switch. YOu don't have to do anything special. If it's a 3550/3560 do this:
- Set all switches to VTP mode transparent
vtp mode transparent
- Set all switches vtp domain name so that it is not NULL
vtp domain MYVTP
- Create vlans on all switches
vlan 100
vlan 101
vlan 102
The ports that connect to one another should look like this:
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast disable
The user ports of the switch should look like this:
interface GigabitEthernet0/7
switchport host
! this is a script that does a few commands
switchport access vlan 100
spanning-tree portfast
This is just a bare minimum configs, but it should get the 4 talking to one another. If your switch is a completely different model, post that here. That will help.
