What is the range of route Metrics in routing?

In routing, the metric is a value assigned to a route that reflects the cost of using that route for packet transmission. The range of route metrics can vary depending on the specific protocol in use, but it is common for metrics, particularly in protocols such as RIP (Routing Information Protocol), to have a range from 0 to 255.

A metric of 0 typically signifies an unreachable route, while a metric of 255 indicates that a route is less preferred than other available routes. This means that any metric value within this range can be utilized to indicate the desirability of a path—the lower the metric, the more preferred the route is for packet forwarding.

The other options do not accurately portray the standard metric range. While some routing protocols have different systems or interpretations of metrics, the correct and widely used range for most standard routing protocols is indeed from 0 to 255.