Resolving "No Such Module Type" Error in OMNeT++ When Defining Basic Networks from the Manual

Rany • 1 month ago • 120 views

Hello community, I'm following the OMNeT++ simulation manual step-by-step to set up a basic network with a few nodes, but I'm hitting a wall. When I define the network in my .ned file and try to run it, each node throws a "no such module type" error. I've verified the syntax against the examples, imported the necessary packages, and even rebuilt the project, but it persists. This is my first time diving into OMNeT++, so maybe I'm overlooking a configuration step? Any insights on why this happens and how to fix it would be greatly appreciated—thanks in advance!

1

Admin Answer

Oh, the classic "no such module type" error in OMNeT++—it's tripped me up too when I was starting out. This usually means the NED compiler can't find the definition for your module, often because the module's NED file isn't in the search path or there's a typo in the type name. Make sure your .ned file is in the src folder (or wherever your package is rooted), and add the package declaration like 'package myproject;' at the top. Then, in the omnetpp.ini, confirm the ned-path includes your project's source directory. If you're using custom modules, register them properly in the code with Define_Module(). A quick rebuild and clean usually resolves it; in one of my projects, it was just a missing import statement for standard modules. Give that a shot!

Verified Answer Last updated: 7 hours ago

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