RARE (Router for Academia, Research & Education) is an ongoing effort under the GÉANT 3rd programme which focus on determining if a routing software platform solution can fit R&E use cases. The project aims to integrate different pieces of software related to these building blocks:
- control plane: RARE uses FreeRouter under the hood used as the control plane component
- data plane: P4 is used to describe the behavioral model of RARE data plane
- and communication interface between the control plane and data plane: Interface compliant to P4Runtime specification ensure this function
A key part of the work consists in enabling a control plane software to pilot a data plane via a programmatic interface.
P4 is such a language proposing an interface that allows data plane programmability.
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P4 core language attempts to be as much as possible independent from the target or NPU processor architecture. However architecture dependance is still prominent. Code adjustments followed by a target specific compilation is necessary if you want to run your p4 program on a specific architecture. |
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