Summary:How many STP port states are there? It depends on who you ask.  Learn the details you need to pass the BSCI exam from Chris Bryant, CCIE #12933. Keywords:cisco, ccnp, certification, spanning, tree, stp, protocol, bcmsn, disabled, listening, learning, blk Article Body:As a CCNP candidate and a CCNA, you may be tempted to skip or just browse the many details of Spanning Tree...