It is similar to 3550L3. You create layer 3 VLAN interfaces corresponding to layer 2 VLANs. For example, say you have VLAN 1, 2,3 and 5 at the layer 2, then to route between these 5 VLANs, you'll need to configure layer 3 VLAN interfaces for vlan 1, 2, 3, 4 and 5