Reference Guide

512 Glossary
Broadcast Domain
device sets that receive Broadcast frames originating from any device within a
designated set. Routers bind Broadcast domains, because routers do not
forward Broadcast frames.
Broadcasting
A method of transmitting packets to all ports on a network.
Broadcast Storm
An excessive amount of Broadcast messages simultaneously transmitted
across a network by a single port. Forwarded message responses are heaped
onto the network, overloading network resources or causing the network to
time out.
C
CDB
Configuration Data Base. A file containing a device’s configuration
information.
Class of Service
Class of Service (CoS). Class of Service is the 802.1p priority scheme. CoS
provides a method for tagging packets with priority information. A CoS value
between 0-7 is added to the Layer II header of packets, where zero is the
lowest priority and seven is the highest.
A overlapping transmission of two or more packets that collide. The data
transmitted cannot be used, and the session is restarted.
CLI
Command Line Interface . A set of line commands used to configure the
system. For more information on using the CLI, see Using the CLI
.
Communities
Specifies a group of users which retains the same system access rights.