A Simplified Guaranteed Service for the Internet

Abstract

Abstract. An expected growth of real-time traffic in the Internet will place stricter requirements on network performance. We are developing a new simplified service architecture that combines the strengths of the integrated and differentiated services architectures. In this paper we focus on the issues related to providing a guaranteed service in a high-speed network. We give a description of the service, which includes a lightweight signaling protocol and a non-work-conserving scheduling algorithm, and describe the system requirements and the performance evaluation. Our implementation of the protocol allows processing of 30 million signaling messages per second.

Hybrid Technique for Enhancing Quality of Service in Wireless Network

“…The IntServ architecture classifies network traffic into three classes: guaranteed service, controlled load service and best effort delivery service [20]. For traffic with guarantees, IntServ provides reservation of bandwidth and buffers by using signaling between network nodes [21]. From the point of view of performance and scalability, IntServ appeared to be a too cumbersome architecture for high-speed IP networks.…”

“…In DiffServ, the traffic is assigned to specific behaviour aggregates. It avoids per-flow states in the routers, and instead ingress nodes perform traffic metering and admission control on the flows [21]. The services offered to access points are statically described by service level agreements.…”

Scalability and quality of service: a trade-off?

“…IntServ, on the other hand, is more flexible but less scalable. As a result, several proposals for combining the flexibility of service provisioning through RSVP or a similar, possibly more scalable, signaling protocol with the fine service granularity of IntServ and the scalability of DiffServ have emerged; some examples are [3,4], where a whole new simplified framework for guaranteed services is proposed.…”