What protocol or technology disables redundant paths to eliminate Layer 2 loops?

The protocol or technology that disables redundant paths to eliminate Layer 2 loops is STP, which stands for Spanning Tree Protocol. STP is essential in network environments to prevent loop conditions that can occur with redundant paths in a network, which can lead to major problems like broadcast storms and network failures. By selectively blocking certain paths, STP maintains a loop-free and efficient network topology.