This document discusses quality of service (QoS) requirements and defines QoS as the overall performance of a network, especially as seen by users. It notes that QoS is important for transporting certain types of traffic like streaming media, IPTV, VoIP, and video conferencing. The document outlines steps for QoS management, including baselining the network, deploying QoS techniques for targeted applications, and evaluating results. It also describes three levels of end-to-end QoS: best-effort service with no guarantees, differentiated service that treats some traffic better statistically, and guaranteed service with an absolute reservation of resources.

1. QUALITY OF SERVICE (QoS)
REQUIREMENTS
Done by
MAHENDRA MISHRA
ECE-6A(1306005)

3. ARCHITECTURE OF QoS

4. DEFINITION
 Quality of service (QoS) is the overall performance of a
telephony or computer network, particularly the
performance seen by the users of the network.
 Quality of service is particularly important for the
transport of traffic.

5. PARAMETERS OF QoS

6. APPLICATIONS
 A defined quality of service may be desired or required
for certain types of network traffic, for example:
 Streaming media specifically.
 Internet protocol television (IPTV).
 Audio over Ethernet.
 Audio over IP.
 IP telephony also known as Voice over IP (VoIP).
 Videoconferencing.
 Telepresence.

7. Application Contd.

8. QoS MANAGEMENT
 QoS management helps to set and evaluate QoS policies and
goals. A common methodology entails the following steps:
 Baseline the network with devices such as Remote Network
MONitoring (RMON) probes. This helps in determining the
traffic characteristics of the network.
 Deploy QoS techniques when the traffic characteristics have
been obtained and an application(s) has been targeted for
increased QoS.
 Evaluate the results by testing the response of the targeted
applications to see whether the QoS goals have been reached.

9. MANAGEMENT BLOCK DIAGRAM

10. LEVELS OF QoS
 Three basic levels of end-to-end QoS can be provided across a
heterogeneous network,The Three Levels of End-to-End QoS
Are Best-Effort Service, Differentiated Service, and
Guaranteed Service:
 Best-effort service - Also known as lack of QoS, best-effort
service is basic connectivity with no guarantees. This is best
characterized by FIFO queues, which have no differentiation
between flows.
 Differentiated service (also called soft QoS) - Some traffic is
treated better than the rest (faster handling, more average
bandwidth, and lower average loss rate). This is a statistical
preference, not a hard and fast guarantee. .
 Guaranteed service (also called hard QoS) - This is an
absolute reservation of network resources for specific traffic.

11. LEVELS FIGURE

12. QoS TABLE

13. QoS GRAPH

14. HOW CUSTOMER SATISFY ?

15. PARAMETERS TO SATISFY THE
CUSTOMERS