This read-create value, in milliseconds, is the minimum interval this router enforces between transmitting LSPs over a point-to-point interface, independent of the broadcast-circuit throttle used on LANs. It protects narrow point-to-point links, such as serial WAN circuits, from being overwhelmed by rapid-fire LSP floods during periods of network instability. A service provider might raise csIsisCircLSPThrottle on a low-bandwidth Frame Relay PVC to prevent LSP flooding from starving customer traffic during a flapping-link event.