This read-create value, in seconds and ranging 1 to 26214, sets how often this Candidate-RP sends periodic Candidate-RP-Advertisements to the BSR, defaulting to 60 seconds. It controls the trade-off between BSR update responsiveness and control-plane overhead from PIM advertisement traffic. An admin on a stable, low-churn multicast network might raise this interval to reduce advertisement chatter, while one needing faster RP failover detection would lower it.