A head of line (HOL) blocking count value, which is directly proportional to the committed traffic load for traffic flow through an output port within a multi-stage switch mesh, is computed for a path by adding the values associated with all output ports within the path. In selecting a route, all paths...http://www.google.com/patents/US20030035432?utm_source=gb-gplus-sharePatent US20030035432 - Mechanism for cell routing in a multi-stage fabric with input queuing