Home > Articles > STP


Chapter Description

Network redundancy is a key to maintaining network reliability. In this sample chapter from Scaling Networks v6 Companion Guide, explore potential redundancy problems, symptoms, and protocols to manage them.

From the Book

Scaling Networks v6 Companion Guide

Scaling Networks v6 Companion Guide

$66.00 (Save 10%)

Key Terms

This chapter uses the following key terms. You can find the definitions in the Glossary.

Layer 2 loop

broadcast storm

time to live (TTL)

bridge protocol data unit (BPDU)

Spanning Tree Algorithm (STA)

root bridge

bridge ID (BID)

extended system ID

root port

designated port

alternate port

backup port

blocking state

spanning-tree instance (STP instance)

bridge priority

root path cost

default port cost

topology change (TC) bit

topology change acknowledgment (TCA) bit



Common Spanning Tree (CST)

Per-VLAN Spanning Tree (PVST+)

Rapid Spanning Tree Protocol (RSTP)

IEEE 802.1w

Rapid Per-VLAN Spanning Tree (Rapid PVST+)

Multiple Spanning Tree Protocol (MSTP)

IEEE 802.1s

Multiple Spanning Tree (MST)


BPDU guard

BPDU filter

root guard

loop guard

listening state

learning state

forwarding state

disabled state

edge port


STP diameter

3. Introduction ( | Next Section Previous Section

There are currently no related articles. Please check back later.