On worst case traffic in ATM networks
Bahadir Erimli · 1995
Asynchronous Transfer Mode ( ATM ) networks, which are the emerging standards for the future broadband-ISDN networks, allows for the input traffic from users to vary both from one call to another and within the call. ATM specifies a method for controlling the traffic flow across the user network interface ( UNI ). This involves each user negotiating call parameters with the network. Once these parameters have been decided then a contract is made between the user and network. The network must then enforce the contract in order to guarantee performance and quality of service to other users. What is of interest to the network is given a particular set of users and contracts what is the worst traffic that the users could input to the network while still abiding by their contracts. This type of input traffic would be called the worst case traffic as it would produce the lowest performance in the network. The reason why this is of importance is that for simulating network performance wewould liketohave the worst case traffic inputs. Furthermore, it's important for the traffic controller, network, to know the possible worst case traffic so that it can assign parameters accordingly.