D-Link DES-3326 User Manual page 413

24-port NWay Ethernet Switch User's Guide
Using layer 3 switches and IP routing eliminates the need for
STP port blocking because the packets are routed by destination
addresses. The link redundancy remains, and relying on the
routing protocols gives a faster convergence than with STP.
The drawback is that the introduction of layer 3 switching
usually requires a new addressing scheme.
Understanding and Troubleshooting the Spanning Tree Protocol 397