User manual

67 Version 1.0
3.4.3 QoS
Quality of Service (QoS) refers to the capability of a network to provide better service to
selected network traffic over various technologies, including Frame Relay, Asynchronous
Transfer Mode (ATM), Ethernet and 802.1x networks, and IP-routed networks that may
use any or all of these underlying technologies. The primary goal of QoS is to provide
priority including dedicated bandwidth, controlled jitter and latency (required by some
real-time and interactive traffic), and improved loss characteristics. Also important is
making sure that providing priority for one or more flows does not make other flows fail.
QoS technologies provide the elemental building blocks that will be used for future
business applications in campus, WAN and service provider networks. This chapter
provides each setting of QoS.