In-vehicle network system and management method of in-vehicle network system

A computer-implemented management method for managing an in-vehicle network system equipped to a vehicle, wherein the vehicle includes multiple control devices connected to a communication bus and the multiple control devices communicate with one another via the communication bus, each of the multiple control devices has cluster information indicating a cluster to which ego control device belongs among multiple clusters classified in advance, and each of the multiple control devices switches to an activated state or maintains the activated in response to receiving of a network management message, which is transmitted from another of the multiple control devices and includes activation cluster information indicating a target cluster to be activated is same as the cluster indicated by the cluster information of ego control device,

• the management method comprising:
• determining, when a rewrite request for rewriting the cluster information is received in at least one of the multiple control devices, that the rewrite request is a valid rewrite request under a condition that the rewrite request is within a rewritable range of the cluster information, the rewritable range being set according to an attribute of a rewrite request source of the rewrite request;
• and
• rewriting the cluster information in accordance with the valid rewrite request.

A computer-readable non-transitory storage medium storing a program to be executed by at least one processor of an in-vehicle network system equipped to a vehicle, the program comprising instructions for managing the in-vehicle network system, wherein the vehicle includes multiple control devices connected to a communication bus and the multiple control devices communicate with one another via the communication bus, each of the multiple control devices has cluster information indicating a cluster to which ego control device belongs among multiple clusters classified in advance, and each of the multiple control devices switches to an activated state or maintains the activated in response to receiving of a network management message, which is transmitted from another of the multiple control devices and includes activation cluster information indicating a target cluster to be activated is same as the cluster indicated by the cluster information of ego control device,

• the instructions of program comprising:
• determining, when a rewrite request for rewriting the cluster information is received in at least one of the multiple control devices, that the rewrite request is a valid rewrite request under a condition that the rewrite request is within a rewritable range of the cluster information, the rewritable range being set according to an attribute of a rewrite request source of the rewrite request;
• and
• rewriting the cluster information in accordance with the valid rewrite request.