1. A multiprocessor system comprising: at least one processing module; at least one input/output module; and an interconnect network to communicatively couple the at least one processing module with the at least one input/output module, the interconnect network including: at least two bridges to send and receive transactions from the at least one input/output module and the at least one processing module; and at least two crossbar switches to route the transactions over a bus between the at least two bridges.