Patent ID: 7466701

Claim:
A method, comprising: routing a packets of information in a network having a plurality of levels of switches organized in a hierarchy, in which a highest level includes switches, each having a set of connections with respective switches of an underlying level, and a lowest level includes switches which are able to interact with respective processes, said switches being connected by connections which are able to transport packets in opposite directions in such a way that one of the switches, or one of the processes associated with the one switch and acting as a source, can send the packets in the network along a path constituted by an ascending stretch, in which the packet goes up the network hierarchy as far as a root switch common to the source and a destination, and a descending stretch, in which the packet goes down the network hierarchy towards the destination, the routing including: defining said path in a non-adaptive way; and selecting said ascending stretch according to the source without regard for the destination and selecting said descending stretch according to the destination, without regard for the source, irrespective of traffic of packets being transmitted in the network.