Queue Management for Explicit Rate Based Congestion Control

Rate based congestion control has been considered desirable, both to deal with the high bandwidth-delay products of today's high speed networks, and to match the needs of emerging multimedia applications. Explicit rate control achieves low loss because sources transmit smoothly at a rate adjusted through feedback to be within the capacity of the resources in the network. However, large feedback delays, presence of higher priority tra c, and varying transient situations make it di cult to ensure feasibility i.e., keep the aggregate arrival rate below the bottleneck resource's capacity while also maintaining high resource utilization. These conditions along with the fast start" desired by data applications often result in substantial queue buildups. We describe a scheme that manages the queue buildup at a switch even under the most aggressive patterns of sources, in the context of the Explicit Rate option for the Available Bit Rate ABR congestion control scheme. A swi...

• Type: Conference
• Year: 1997
• Where: SIGMETRICS
• Authors: Qingming Ma, K. K. Ramakrishnan
• Keywords: Explicit Rate, Hardware, Queue Buildup, SIGMETRICS 1997, Substantial Queue Buildups