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| Content Provider | ACM Digital Library |
|---|---|
| Author | Ulfers, Horst E. |
| Abstract | PACKSIM is a recent personal computer implementation of a large scale simulation model of a packet switched network simulator which had been previously developed for use on the IBM System/370 mainframe. This paper addresses special modeling techniques used in simulating the flow of various types of packets through a packet switched network. Techniques to keep the overhead associated with discrete simulations low are even more important for personal computer implementations then for the large main frame. The model is written in the PC-SOL simulation language interspersed with special PASCAL procedures and functions for traffic generation and alternate routing. The alternate routing algorithm is implemented as a special module, such that it can easily be replaced with a different one when desired. The model simulates in detail the specific protocols within a typical packet switched network. The paper also discusses the procedure to be followed in compiling and executing the model. Inputs to the model are parameterized. Consequently, a recompilation of the model becomes necessary only when major changes are to be implemented. A pre-processor will generate the input data for the model in interactive fashion with the user. During execution the model generates a log file that contains records of all significant events of the simulation. The PC-SOL analytical routines are used to analyze the log tape and generate statistics as well as presenting graphics of the simulation. The paper concludes with a description of the simulation of a typical, but small, network to demonstrate the capabilities of PACKSIM. |
| Starting Page | 769 |
| Ending Page | 775 |
| Page Count | 7 |
| File Format | |
| ISBN | 0911801111 |
| DOI | 10.1145/318242.318519 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1986-12-01 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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