LAN Environment

LAN Equipment

The LAN equipment models are developed around the premise that a LAN architecture consists of equipment connected to a transmission media through a network interface card (NIC). The default equipment models provided in the LAN environment are very different from the telecom equipment models, both in terms of structure and functionality. The four categories of LAN models are

Network Interface Card (NIC)
Transmission Media
Computing Device
Internetwork Device.

All Internetwork and Computing Device models contain at least one NIC that is used to connect the model (through arcs) to a Transmission Media model to form a model LAN. All LAN equipment models also have reliability controls for simulating equipment failure and restoration. A sample Media Reliability Controls panel is shown in Figure 4.1.

Figure 4.1: Sample Media Reliability Controls

You can immediately fail or restore an equipment model by clicking the

and

buttons on the Reliability Controls, or you can schedule these events to occur throughout the simulation. The Fail Distn and Restore Distn controls are used to select statistical distributions for scheduling reliability events. When Fail Distn and Restore Distn are operational and you click the

button, the simulation samples from the respective statistical distributions and schedules the events accordingly. The check boxes to the left of the Fail Distn and Restore Distn controls can be used to disable or enable their scheduling.

LAN Equipment

NIC Model

Transmission Media Models

Computing Device Models

Printer Model

Workstation Model

Server Model

Internetwork Device Models

Bridge Model

Router Model