1. Interface network ( 440 , 640 ) for network on chip adapted to interface a data processing unit ( 130 , 230 ) with said network, wherein said interface and/or said processing unit can be configured to a plurality of configurations, wherein the interface network comprised a local controller ( 470 , 670 ) adapted to configure said interface and/or said processing unit to said configurations by means of configuration contents, wherein each configuration content defines a communication configuration of the interface and/or an operating configuration of the processing unit, wherein said interface network is characterised in that each configuration is indexed by an index, it comprises a management configuration unit ( 460 , 660 ) including a client module ( 490 , 690 ) adapted to: transmit via said network, when the content of a configuration is unavailable in said interface, wherein a request has for argument the index of the unavailable configuration; receive via said network of a configuration server, the content of said unavailable configuration; provide the local controller with the content of the configuration thus received.