var fDesc=new Array(); fDesc[0] = "The Network Simulator is a program which supports Windows, and which aims at explaining the Ethernet/TCP-IP networks.

Its goal is to simulate the behavior of each element of a network configuration: hub, switch, router.

It can be used as an interactive support used in the introduction of a lesson on networks.

Main Features :

- Available components : Stations, Hubs or concentrators, Switches or commutators, Routers, The Internet network
- Types of simulations : Ethernet, collisions, ARP, IP Protocols, Transport layer, Application layer
- Demonstration Modes : Manual, automatic, step-by-step

Main Functionalities :

- Level 1 and 2 vlans, spanning tree
- Ping, routing
- Sending of segments, filtering, Nat/Pat
- SQL requestor and RDBMS
- Navigator and HTTP server
- FTP client and server"; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }