Network Basics: Spanning Tree Protocol
For new networkers, Spanning Tree Protocol (STP) can be an intimidating topic. Many old-timers speak of spanning-tree in ominous tones, recounting the time when a “spanning-tree loop” brought down the network. Some managers strictly forbid anyone from changing anything related to the spanning tree, fearing a resulting service interruption. Some of the fear surrounding spanning trees is likely based on bad experiences, but some are based on ignorance—at least partly.