The traceroute utility is used to display the physical routing path between two internet devices communicating with each other. It maps out the journey from one router to another (sometimes called a “hop”) – It is a tool that shows the packet path. It lists all the points that the packet passes through. Traceroute is used mostly when the packet does not reach the destination. Traceroute is used to check where the connection breaks or stops or to identify the point of failure.