A congestion control mechanism for enterprise network traffic over asynchronous transfer mode networks

Abstract

Available bit rate (ABR) is an emerging asynchronous transfer mode (ATM)-based telecommunication service, which dynamically allocates bandwidth to the users according to the available bandwidth in the network. However, research shows that ABR-based connections suffer from congestion at LAN-ATM gateway when ATM network abruptly reduces the bandwidth available to the gateway. Gateway congestion may result in high packet loss. This paper proposes a gateway congestion control mechanism, which controls the rate of outgoing enterprise traffic according to the available bandwidth at the gateway. Our analysis shows how to achieve a stable system and keep the packet loss below a desired threshold. Analytical results are validated by simulation. ᭧

A new recurrent neural network adaptive approach for host-gate way rate control protocol within intranets using ATM ABR service

“…In paper [5], a new design of traffic management mechanism for enterprize networks is presented, taking the varying bandwidth of the access-link into consideration. Implementation of this mechanism in the intranet is expected to significantly reduce the buffering requirement in the access-gateway.…”

“…Implementation of this mechanism in the intranet is expected to significantly reduce the buffering requirement in the access-gateway. The traffic management problem was formulated as a classical feedback control system in [5]. The current buffer level and the bandwidth of the ABR link in the gateway are periodically fed back to a "controller" which calculates the allowed intranet traffic rate to the gateway to keep the buffer level at a desired set point.…”

“…The current buffer level and the bandwidth of the ABR link in the gateway are periodically fed back to a "controller" which calculates the allowed intranet traffic rate to the gateway to keep the buffer level at a desired set point. As it is noted that the control strategy of HGRCP in [4,5] employed a constant proportional gain plus feed forward control. The proposed controller there is not adaptive to the noise of the network.…”

SBM+: enhanced SBM for managing bandwidth in multiple access subnets

“…Another scheme called IP Rate control [4] uses linear feedback control filter for rate calculation given by the following equation:…”

“…I( is feed forwarded to reduce the impact of noise on control system. Properties of linear feedback control has been discussed in details in [4] The Gateway ( Egress router), periodically, (at T seconds interval) calculates the required aggregate input rate R that will keep the queue length y at a pre-specified threshold Q.…”