The ATM Guaranteed Frame Rate (GFR) service is intended for best e ort traffic that can benefit from minimum throughput guarantees. Edge devices connecting LANs to an ATM network can use GFR to transport multiple TCP/IP connections over a single GFR VC. These devices would typically multiplex VCs into a single FIFO queue. It has been shown that in general, FIFO queuing is not sufficient to provide rate guarantees, and per-VC queuing with scheduling is needed. It shows that under conditions of low buffer allocation, it is possible to control TCP rates with FIFO queuing and buffer management. The paper presents analysis and simulation results on controlling TCP rates by buffer management.
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