This read-create value, 0-100 percent, sets the utilization difference between two channels in a load-balancing group required to start balancing, but only has meaning when rdnLoadBalBasicRuleEnable is set to upstream(1) or downstream(2). Admins tune it to control how imbalanced channels must become before the system starts actively moving modems to even things out. A smaller delta threshold makes the system react to smaller utilization gaps between channels, redistributing load more aggressively.