Čuj, Peter: Interoperability comparison of available EIGRP implementations. [Bachelor thesis] – The University of Žilina, Faculty of Management Science and Informatics, Department of InfoComm Networks. – Tutor: Ing. Martin Kontšek – Qualification level: Bachelor of Informatics. Žilina: FRI ŽU in Žilina, 2018. – 48 p.The main goal of this thesis was to compare the complexity of the installation, implementation, configuration and functionality of each EIGRP implementation using simple network topologies. The first part describes the individual implementations and basics of the EIGRP protocol. In the second part, used topologies are described also with the errors and deficiencies that have been discovered during testing of the implementations.