A technology is described for redundant network communication in a robot. An example of the technology can include a main robotic controller, a local controller in network communication with the main robotic controller, and instructions that, when executed by the processor, transfer first and second data signals between the main robotic controller and the local controller via first and second network channels. The first data signal is sent over the first network channel, and the second data signal is sent over the second network channel. The instructions compare the first data signal with the second data signal to determine signal integrity of the data signals; determine degradation of the first data signal if the signal integrity is less than the signal integrity of the second data signal; and select the second data signal for processing if degradation of the first data signal is determined.