CCNA Data Center DCICN 640-911 Official Cert Guide

Definitions of Key Terms

After your first reading of the chapter, try to define these key terms, but do not be concerned about getting them all correct at that time. Chapter 23, “Final Review,” directs you in how to use these terms for late-stage preparation for the exam.

blocking state

BPDU Guard

bridge ID

bridge protocol data unit (BPDU)

designated port

EtherChannel

forward delay

forwarding state

hello BPDU

IEEE 802.1D

learning state

listening state

MaxAge

PortFast

root port

root switch

root cost

Spanning Tree Protocol (STP)

Rapid STP (RSTP)

IEEE 802.1w

alternate port

backup port

discarding state