This read-write INTEGER sets, in seconds, how often the switch refreshes its dynamic 3SW/2SW (three-switch/two-switch stacking topology) tables. Admins tune this interval to balance how quickly the switch detects stacking topology changes against the CPU and bus overhead of frequent polling. For example, in a stack that rarely changes membership, an admin raises this interval to reduce background polling load, while a stack undergoing frequent cabling changes might use a shorter interval to detect changes faster.