This read-create object sets the delay metric IS-IS advertises for reaching the destination configured in the corresponding csIsisIPRADest entry over this circuit, with a value of zero reserved to mean the delay metric is not supported on this circuit. It allows path selection based on latency-sensitive metrics separate from the default cost metric, for routers and topologies that make use of the older ISO TOS-style metrics. An administrator on a satellite backhaul link with high latency might set a high csIsisIPRADelMetric to discourage delay-sensitive traffic from preferring that path.