Traffic management Congestion Control Scheme in ATM Networks

The problem of traffic management has been widely recognized as critical to the development of an operational Internet. The goal of traffic management is to efficiently allocated network resources including buffers and bandwidth and provides the negotiated QoS guarantees to users. Rate based Congestion control schemes promises effective traffic management for the ABR service class suitable to data communications in ATM networks. A rate based scheme uses feedback information from the network to specify the maximum rate at which each source can transmit cells in to the network on every VC. In this paper, we considered an efficient rate based congestion scheme, Explicit Rate Indication Congestion Avoidance (ERICA) for ATM networks. An improvement to ERICA scheme is proposed by varying the target rate dynamically. Keywords— ATM network, Cell, Source end terminals, Bit rate, Digital network.