This thesis deals with a powerful CRC simulator developed by me and Dipl. Ing. Herbert Haas during my internship at the VISSE2. The CRC Simulator is a C based software package. To understand the software package fundamentally, this thesis treats with the CRC process and some error identification procedures used in network technology. The developed software package checks various CRC polynomials for suitability to find errors. In this case, pre-defined polynomials are checked with several millions over to billions of different, by random numbers, generated frames which are injected with bit errors via CRC process. If a erroneous frame is not detected, informations about it will be stored in seperate files, which the basis of the evaluation represent. The software package supports simulation of bit and burst errors which may occur for example during wireless LAN transmissions. Single biterrors are single-flipped errors occuring in the whole data package. On the other hand burst errors are errors caused by several bitflips in row. Initialy, the softwarepackage was uncertain because no boundary conditions have been tested. Optimizations and some features have been missed. During the development some improvements and tests have beeen made. In addition this thesis represents – because of the penultimate chapter – a user-manual for this software package.