L2IFPPI/4/MAC_LIMIT_ALARM:OID [oid] MAC address learning is resumed. (L2IfIndex=[INTEGER], MacLimitVlanId=[INTEGER], L2IfPortIndex=[INTEGER], BaseTrapSeverity=[INTEGER], BaseTrapProbableCause=[INTEGER], BaseTrapEventType=[INTEGER], MacDynAddressLearnNum=[INTEGER], MacLimitMaxMac=[INTEGER], L2IfPortName=[OCTET])
设备学习到的MAC地址达到指定的限制数之后又恢复到告警阈值以内。