It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST+ and MST.

It prevents switch loops by detecting on one-way communications on the physical port.

It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.

It makes the port go immediately into the forwarding state after being connected.

It prevents switched traffic from traversing suboptimal paths on the network.

It does not generate a spanning-tree topology change upon connecting and disconnecting a station on a port.

Applications

Infrastructure connectivity

Hardware

Data

APIs