A notification indicating that number of active session from a particular client Ethernet MAC address has reached the configured per MAC limit. There won't be any more session possible from this client MAC address. An agent must not generate more than one cPppoeSystemSessionPerMACLimitNotif `trap-event` in a 30 second period, where a `trap-event` is the transmission of a single trap PDU to a list of trap destinations. If additional `the number of PPPoE MAC sessions exceeds the allowed limit` condition occur within the 30 second `throttling` period, then these trap-events should be suppressed by the agent.