Processing method, communication system, and recording medium

A communication system, comprising:

• a first communication device that includes a first communication interface and a processor;
• and
• a second communication device that includes a second communication interface,
• wherein the processor is configured to:
• output, from the first communication interface, a plurality of data items to a communication path between the first communication interface and the second communication interface while changing a communication setting value regarding the first communication interface;
• acquire error information related to outputting of the plurality of data items to the communication path;
• store the acquired error information as error management information acquired by associating the communication setting value with the error information;
• specify a predetermined number of continuous communication setting values at which an error is not detected based on the error management information;
• set a target setting value of the specified communication setting values for the first communication interface;
• and
• execute a communication process between the first communication interface for which the target setting value is set and the second communication interface.

A non-transitory computer-readable recording medium storing a program that causes a processor included in a first communication device connected to a second communication device to execute a process, the process comprising:

• outputting, from a first communication interface of the first communication device, a plurality of data items to a communication path between the first communication interface and a second communication interface of the second communication device while changing a communication setting value regarding the first communication interface;
• acquiring error information related to the outputting of the plurality of data items;
• storing the acquired error information as error management information acquired by associating the communication setting value with the error information;
• specifying a predetermined number of continuous communication setting values at which an error is not detected based on the error management information;
• setting a target setting value of the specified communication setting values for the first communication interface;
• and
• executing a communication process between the first communication interface for which the target setting value is set and the second communication interface.