Network Management Chapter 10 Revised January 2007 Panko’s Business Data Networks and Te/ecommunications. 6th edition Copyright 2007 Prentice-Hall May only be used by adopters of the book
Chapter 10 Revised January 2007 Panko’s Business Data Networks and Telecommunications, 6th edition Copyright 2007 Prentice-Hall May only be used by adopters of the book Network Management
Network Simulation Software
Network Simulation Software
I Figure 10-1: Network Simulation Simulation Build a model, study its implications More economical to simulate network alternatives than to build several networks and see which one is best Purposes Compare alternatives to select the best one Sensitivity analysis to see what will happen if the values of variables were varied over a range Anticipating bottlenecks because procurement cycles are long in business, so problems must be anticipated well ahead of time
3 Figure 10-1: Network Simulation • Simulation – Build a model, study its implications – More economical to simulate network alternatives than to build several networks and see which one is best • Purposes – Compare alternatives to select the best one – Sensitivity analysis to see what will happen if the values of variables were varied over a range – Anticipating bottlenecks because procurement cycles are long in business, so problems must be anticipated well ahead of time
I Figure 10-1: Network Simulation What Is: the existing situation R7 Net 4 Utilization in Peak hour 95% n Net 2) Too high!(Net 5 What Is analysis: Describe the current situation Is too high (95%); this wllour Problem: Utilization in the peak ho Net 6 create many momentary overloads
4 Figure 10-1: Network Simulation • What Is: the existing situation Net 1 Net 2 Net 3 Net 4 Net 5 Net 6 Utilization in Peak Hour 95% Too high! R7 What Is analysis: Describe the current situation. Problem: Utilization in the peak hour Is too high (95%); this will create many momentary overloads
I Figure 10-1: Network Simulation What-If: See the Impact of a change R7 Net Net 4 Est Added Utilization in Router Added Peak hour Link 70% Net 2 Net 5 What If analysis What will happen if something is done? Adding a new link between r3 and Net5 Net 6 will give good peak hour utilization
5 Figure 10-1: Network Simulation • What-If: See the Impact of a Change Net 1 Net 2 Net 3 Net 4 Net 5 Net 6 Est. Utilization in Peak Hour 70% Added Router Added Link What If analysis: What will happen if something is done? Adding a new link between R3 and Net5 will give good peak hour utilization. R3 R7