Nortel Networks Corporation

Andrew Sciascia

Kim Bryon Roberts

Hamid R Mehrvar

A high bandwidth connection is mapped through a multi-stage switch between an ingress node and an egress node via a center stage comprising M (an integer) center stage nodes. Each center stage node is connected to the ingress and egress nodes by respective links adapted to support m (an integer) respective connections. An m&times;M connection matrix of connections between the ingress node and the center stage is provided. Each column of the connection matrix contains 1&lE;j&lE;m connections between the ingress node and a respective one of the center stage nodes, and each row of the connection matrix contains 1&lE;k&lE;M connections between the ingress node and the center stage nodes. The high bandwidth connection is mapped through the multi-stage switch by layering the high bandwidth connection within the connection matrix. Thus the high bandwidth connection is divided into N segments. Each segment is mapped to a respective one of a block of N available connections within the connection matrix so that a sum of all connections between and ingress and an egress node is substantially evenly distributed across the center stage nodes of the Clos network.

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London, United Kingdom

Andrew Sciascia