Patent ID: 7469275

Claim:
An apparatus comprising: one or more coherent agents within a node coupled to an internal interconnect, in which the interconnect supports intranode coherency for transactions within the node with the one or more coherent agents; a plurality of interface circuits coupled to communicate coherency commands between the interface circuits and respective remote nodes of a plurality of remote nodes; a memory bridge coupled to the interconnect to maintain internode coherency for transactions between one or more coherent agents and the remote nodes, and to generate additional coherency commands responsive to coherent transactions on the interconnect, the memory bridge including an address map to map a node number associating a remote node with one of the interface circuits for communication of a respective coherency command from the memory bridge, via the associated interface circuit, to the remote node; and a switch coupled to the interface circuits and the memory bridge to selectively couple the associated interface circuit to the memory bridge for transfer of the respective coherency command.