Evaluation of Private Networks

An important procedure in network design is performance prediction. In a private network environment, a traffic engineer must recommend a network design that satisfies the customer's performance requirements. A set of computer programs called the Enhanced Network Administration System (ENADS) has been designed for administering Enhanced Private Switched Communications Service (EPSCS) networks and Electronic Tandem Switching (ETS) networks. The E N A D S Network Service Evaluator (NETEVAL) uses point-to-point traffic data and a network routing guide to provide detailed service characteristics of a network design. This paper summarizes the N E T E V A L algorithms. In addition to characterizing network service, N E T E V A L is used, in conjunction with other E N A D S modules, 1 to ensure that the service characteristics chosen by the customer are achieved. The Network Synthesis (NETSYN) module designs a network that is close to the service specified by the customer. T h e service evaluator is used to ensure that the final network recommendation meets the customer's service requirements. Traditionally, performance estimates of a large network in an alternate routing environment have been confined to a segment of a network, such as the intermachine trunk portion. 2 N E T E V A L contains 2143