This read-create Unsigned32, in seconds and ranging 0-65535, sets the interval before this router leaves assert-loser state on an interface unless refreshed by another PIM Assert message, and mismatched values across routers on the same segment can cause incorrect protocol operation. It governs how long a losing router waits before contesting forwarder status again. For example, configuring the same value across every router on a shared multi-access LAN avoids one router timing out of loser state before another actually re-asserts.