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Multipath interconnection: a technique for reducing congestion within fast packet switching fabrics

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2 Author(s)
Anido, G.J. ; Overseas Telecommun. Comm. Services, Sydney, NSW, Australia ; Seeto, A.W.

The banyan interconnection is prone to internal link congestion, resulting in a blocking switch architecture. Several solutions that have been implemented to reduce the severity of link congestion offer packets a multiplicity of paths, which tend to increase packet delay variability and allow delivery of out-of-sequence packets. This, in turn, can lead to an increase in end-to-end protocol complexity, particularly in the case of real-time services. A solution called multipath interconnection is proposed to overcome this difficulty. Multiple (i.e., alternate) paths are provided and one is selected at call-setup time. Subsequent packets belonging to the call are constrained to follow the selected path. A number of path selection strategies are presented.<>

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Selected Areas in Communications, IEEE Journal on  (Volume:6 ,  Issue: 9 )