l2PortDemandAgeHiBound 1.3.6.1.4.1.52.2501.1.2.8.1.4

When the number of MAC entries on a physical port's L2 table reaches the l2PortDemandAgeHiBound (95% full), a number of MAC entries based on l2PortDemandAgeLowBound percentage will be removed (aged-out) from the table.