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CS 635, Lecture 7, Part 2 ATM

Traffic Management

In order for ATM networks to deliver guaranteed quality of service on demand while maximizing the utilization of availble network resource, effective traffic management mechanisms are neded. Almost every aspect of ATM network operation, from signaling requests and routing to network resource allocation and policing, contains some traffic management mechanisms.

Quality of Service Attributes

While setting up a connection on ATM networks, users can specify the following parameters related to the desired quality of service:

CLR = #Lost Cells/ #Transmitted Cells

        BT = (MBS - 1)(1/SCR - 1/PCR).

Traffic Contract 

In general, a traffic contract specifies one of the following classes of traffic:

Congestion Control Techniques

Generic Cell Rate Algorithm (GCRA)

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