This object sets the time interval between successive scans performed by a given consistency checker. A shorter period catches FIB inconsistencies sooner but adds more frequent CPU overhead from repeated scanning, so an admin picks this value based on how quickly corruption needs to be detected versus how much background load the router can tolerate. An admin on a router that has previously had intermittent FIB corruption might shorten this from a default of, say, 300 seconds to 60 seconds to catch problems faster, accepting the added periodic CPU cost.