If you plan to add more switches, say e1/4 of SW-1 going to e/4 of SW-2, the configuration would be a normal trunk. Allow the vLans on both ends of the trunk interface. In SW-2, the configuration must be the same as in SW-1(vlans and the interface facing end stations/hosts).
Nice video! What would the configuration look like if you added an additional switch to e1/4 and had the router attached to second switch?
If you plan to add more switches, say e1/4 of SW-1 going to e/4 of SW-2, the configuration would be a normal trunk. Allow the vLans on both ends of the trunk interface. In SW-2, the configuration must be the same as in SW-1(vlans and the interface facing end stations/hosts).