This read-write value, in seconds, sets the reAuthPeriod constant used by the 802.1X Reauthentication Timer state machine, defaulting to 3600. Admins tune it to control how often the switch forces already-authenticated clients to re-run 802.1X authentication, balancing security freshness against the overhead of repeated authentication exchanges. For example, lowering this from the default hour to 900 seconds would require connected clients to reauthenticate every 15 minutes instead, useful in a higher-security environment.