>for a target percentage of time—say, 99.9 percent—the network can handle all data traffic, so there is no need to keep any links idle. During that 0.01 percent

>for a target percentage of time—say, 99.9 percent—the network can handle all data traffic, so there is no need to keep any links idle. During that 0.01 percent of time, the model also keeps the data dropped as low as possible. 99.9 + 0.01 != 100