List of Frequently Asked Questions
Can I use a virtual machine setup (e.g. Zen or VMware)?
Using a virtual machine to perform the simulation will work in most cases. However the scheduling of your virtual machine setup may result in an inaccurate timing. Functions like delay or traffic shaping which depend on timing may not work correct. Its strongly recommended to test your setup (e.g. with netperf and ping) for verification. For a tutorial how to setup a virtual machine please have a look here: Howto: setup VMware for Wanulator
How can I simulate a modem/DSL/etc. connection?
As you may have noticed at the moment shaping of traffic is only possible on the outgoing data stream (up-stream) of an interface. To shape in both directions you need to have 2 Interface cards available (using either routed or switched mode) and apply a traffic shaping function on both interfaces up-stream.
How is the traffic shaping working?
The shaping is done by a standard token bucket shaper.
I found a bug – what shall I do?
Please report to us using the Contact page.
If I assign a function to an interface which packets will be affected?
Every function is applied to the packets of the outgoing data stream on the interface it is assigned to.
The Hardware I have seems to be not not supported (e.g. boot problems) – what now?
This may happen as its hard to keep up with the pace of new HW and new drivers being released. There are 2 possible ways to handle this: You can try to tweak the boot params (e.g. to disable hotplugging) – please have a look into the appropriate documentation for a comprehensive list of possibilities. If this doesn’t help you can run the Wanulator within a Virtual machine which should allways run fine even on the latest HW. In any case I would highly appreciate if you could send me a short notice which HW you found problematic.
Why is Wanulator only available as a live CD?
One important criteria for the Wanulator was to generate an easy to use, “out of the box experience”. A live CD solves problems like Linux kernel dependencies or environment dependencies effectively. Furthermore test software like Wanulator is expected not to be used on a day per day basis. A live CD can easily turn any available PC into a temporary test-station within seconds.