DQDB Simulator Software

In the course of my study of the DQDB protocol, I constructed the following simple simulator in Visual Basic to test out the basic protocol (including the Bandwidth Balancing (BWB) protocol) and several erasure node options. This software should run on any MS Windows compatible system.

Note: This software has no documentation and absolutely no support (unless you are a DePaul student and I like you). However, it may be fun to try out.

Downloading: to run the simulator, you need the following executable and VB modules. Chances are you may already have the vbrun300.dll or grid.vbx files in your \windows\system directory already. Note you may need to hold down the SHIFT key while clicking these so your browser will download them to a file rather than interpreting them.

1. dqdb.zip (20,878 bytes) - unzips to dqdb.exe (6,621,487 bytes) - place in DQDB directory
2. grid.zip (23,565 bytes) - unzips to grid.vbx (44,656 bytes) - place either in DQDB or in \windows\system directory
3. vbrun300.zip (229,920 bytes) - unzips to vbrun300.dll (398,416 bytes) - must be in \windows\system directory

If you want the Visual Basic source to modify, send me e-mail and I'll make it available to you.

Enjoy. Let me know how it goes.

Greg Brewster (c) 2014 DePaul University - College of Computing and Digital Media