| Publisher | Lahore University of Management Sciences | ||
|---|---|---|---|
| Format | 15.3KB PDF | Date added | 16 Feb 2005 |
| Topics | Switching, MPLS | ||
| Downloads | 3 | ||
The increasing demand for multimedia applications such as VoIP and video streaming has created new challenges for network service providers. The requirements of delay, throughput and packet loss for such applications are inherently different from those of data traffic. The IP service, which is characterized as best effort and performs satisfactorily with data traffic, fails to provide the desired Quality of Service (QoS). There is a need for providing such guarantees by differential treatment of the traffics for these multimedia applications. Differentiated Services (DiffServ) architecture allows traffic differentiation on the basis of traffic class. Packets are marked onto predetermined DiffServ classes at the edges. This marking determines the Per Hop Behavior (PHB) received by the packet at all the subsequent hops.
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