Switch device, communication control method, and recording medium

Abstract

A switch device is a switch device that relays data in an in-vehicle network and including a plurality of first communication ports which are connectable to a plurality of functional units in a vehicle, and includes a plurality of first communication circuits disposed corresponding to the first communication ports and capable of communicating with the functional units via the corresponding first communication ports, one or more second communication circuits different from the plurality of first communication circuits, a switching unit capable of switching a connection destination of each of the first communication ports between the corresponding first communication circuit and the second communication circuit, and a control unit that controls the switching unit such that a connection destination of a target port which is the first communication port serving as a target is switched to the second communication circuit when a predetermined condition is satisfied.