Compute traffic-engineered path delays using delay metrics

You can use delay-based metrics for a Path Computation Element (PCE) to compute traffic engineered paths. You can use delay-based metrics to steer packets on the least latency paths, or the least delay path. To do this, you need to measure the delay on every link and advertise that using a suitable routing protocol (IGP or BGP-LS), so that the ingress has the per link delay properties in its TED.