Spanning Tree - A technique used for detection and rectification of loops in a network, thus ensuring that only one route exists between any two LANs.

Spanning Tree Algorithm - (STA) - An algorithm originally developed by Digital Equipment Corporation, that finds the most efficient path between segments of a multi-looped, bridged network. It allows redundant bridges to be used for network resilience, without the broadcast storms associated with looping. If a bridge fails, a new path to a redundant bridge is opened.