Traffic Management for Atm Local Area Networks Using a Combined Preventive/reactive Control Mechanism
نویسنده
چکیده
This paper investigates how the performance of a preventive control scheme using a Leaky Bucket can be improved by using a feedback control loop. The proposed scheme is adaptive to congestion within the network. The queue occupancy of a network element is used as an indication of congestion and the individual sources, whose transmission path passes through the congested switch, are informed to reduce their activity. The effects of the transmission delay and the system parameters on the system performance are examined. The results show that appropriate feedback control in ATM LANs considerably improves the cell loss performance due to congestion.
منابع مشابه
Performance of an ATM LAN switch with back-pressure function
Traffic control schemes for ATM networks can be classified into two categories: reactive congestion control and preventive congestion control. Reactive congestion controlcan be effective in ATM local area networks as well as preventive congestion control. A possible scheme to realize efficient reactive congestion control is a switch architecture, which possesses buffers on both sides of input a...
متن کاملOverview of Preventive Traffic Management in Atm Networks
Aim of this paper is to present ATM technology and its main advantage, the mechanism of a traffic management and congestion control. In the first part brief overview of traffic management issues in ATM network are presented. Then requirements on preventive traffic control functions are discussed. In the second part of this paper we address various types of proposed connection admission control ...
متن کاملPerformance Optimization of ATM Input Control using an Adaptive Leaky-Bucket Mechanism
This paper investigates a combined reactive/preventive congestion control mechanism. Emphasis is given to optimize the Leaky Bucket (LB) mechanism chosen for source traffic policing in ATM networks, examining performance characteristics such as reaction time, cell loss and cell delay. The performance of both buffered and unbuffered LBs is analyzed using the fluid-flow model. Closed form formula...
متن کاملPerformance Evaluation of Rate-Based Congestion Control Methods in ATM Networks
An ATM technology realizes B-ISDN by asynchronously treating various multimedia information such as data, voice and video. In ATM networks, traffic management is an important issue to utilize network resources efficiently, and ABR traffic is indispensable for data communication and most of existing applications. Rate-based congestion control is a promising scheme to incorporate ABR traffic into...
متن کاملTraffic Management in Atm Networks
In this paper we present the traffic management functions in Asynchronous transfer mode (ATM) networks. In the first part of the paper commonly used traffic models for ATM traffic are discussed. Traffic management and its functions in the network are presented in the next part of the paper. Then connection admission control methods (CAC) as preventive traffic management mechanism are then prese...
متن کامل