We want to test our application AAA for Diameter Client, Diameter Server, Radius Server over interface SWx and SWm. As defensics is a pretty expensive tool, we are looking for an alternative for the same.
Please help.
You could checkout Seagull for load testing:
https://gull.sourceforge.net/doc/diameter.html
PyHSS is an open source Diameter stack, for use an HSS, EIR, IMS-HSS, AAA, etc, it includes a Diameter client for generating request and responses and already includes support for SWx and SWm.