| CPC H04L 67/12 (2013.01) [H04L 45/66 (2013.01); H04W 4/025 (2013.01)] | 4 Claims |
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1. A relay device used in an in-vehicle network including a plurality of function units, the relay device comprising:
circuitry configured to perform a relay process for a frame transmitted and received between the function units; and
a processor, wherein
the circuitry
receives, from a function unit, a target frame which is transmitted and received according to a predetermined communication protocol and includes information with which a request source of a service is identifiable and information with which a content of the requested service is identifiable, and
outputs the received target frame to the processor,
when a content of the target frame received from the circuitry satisfies a predetermined condition, the processor
stores, in the target frame, port information indicating a communication port through which the received target frame has been transmitted, among a plurality of communication ports in the relay device, and
outputs the target frame having the port information stored therein, to the circuitry, and
the circuitry transmits the target frame received from the processor, to the function unit which is a destination of the target frame.
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