Patent ID: 7912019
Filing Date: 2011-03-22
Classification: H04L,H04Q

Abstract:
1. A method of upgrading a scalable switching network, comprising: adding a second extra stage of switching elements hardware to the scalable switching network comprising a plurality of internal ports as defined by a post-reconfiguration architecture, said scalable switching network comprising a non-redundant multistage interconnection network having a plurality of stages of switching elements with a first stage and a last stage, a first extra stage of switching elements, a first cyclic group interstage interconnection (CGISIC) network connecting the extra stage of switching elements with either the first stage or the last stage, a plurality of stages of switching elements, a plurality of internal ports, a plurality for external ports, and a plurality of internal connections, wherein the internal ports and external ports are coupled to one of the switching elements and the internal connections are coupled to two of the internal ports; assigning to each internal port a corresponding port defined by the post-reconfiguration architecture; rewiring any internal port on the basis of the post-reconfiguration architecture; and the rewiring comprises: the post-reconfiguration architecture comprises: