Implications of Precedence and Preemption Requirements on Packet Based Transport Architectures

Over the last several years there have been various attempts to extend traditional Precedence enabled transport services to support all Command and Control (C2) applications. Traditional experience with Precedence based transport services support either circuit-switched, voice-based transport, e.g., the Defense Switched Network (DSN), or message-switched transport, e.g., the Defense Message System (DMS) and the Automated Message Handling System (AMHS). The authors believe these attempts to extend and define new Precedence enabled transport services have failed because of a lack of well defined requirements and an understanding of their implications.