IEEE/ACM Transactions on Networking

The Tenet real-time protocol suite: Design, implementation, and experiences

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Many future applications will require guarantees on network performance, such as bounds on throughput, delay, delay jitter, and reliability. To address this need, we have designed, simulated, and implemented a suite of network protocols to support real-time channels (network connections with mathematically provable performance guarantees). The protocols, which constitute the prototype Tenet real-time protocol suite (Suite 1), run on a packet-switching internetwork and can coexist with the popular Internet protocol suite. We rely on the use of connection-oriented communication, per-channel admission control, channel rate control, and priority scheduling. This protocol suite is the first set of transport and network-layer communication protocols that can transfer real-time streams with guaranteed quality in packet-switching internetworks. We have performed a number of experiments and demonstrations on multiple platforms using continuous-media loads (particularly video). Our results show that our approach is both feasible and practical to build, and that it can successfully provide performance guarantees to real-time applications. This paper describes the design and implementation of the suite, the experiments we performed, and some of the lessons we learned. © 1996 IEEE.