Electromagnetic interference on the radio channel cause a performance reduction in the communication systems. Today, IP-based communications are introduced on a broad front in society and also in the Swedish Defence Forces' radio network. However, IP is originally developed for wired networks where the receiver conditions are different from those of a radio system. Because the TCP/IP protocols are not adapted to the channel variations caused by electromagnetic interference, it is important to analyse which problems that may occur. Disruptions from the physical layer are propagated up to higher layers in the TCP/IP stack, where services and applications are affected. The report examines the consequences of electromagnetic interference on higher layers, and describes how the protocols are affected by the radio channel's properties. For compatibility reasons, the TCP/IP protocol should not be modified without a comprehensive standardization process. Therefore, the goal here is to provide recommendations for link and application design for more efficient communication systems. One conclusion from the work is that error detection on the link layer is important, because undetected bit errors in the packets can adversely affect traffic in the network.