This read-only INTEGER (0-2147483647) counts, per ifIndex, the number of packets received since the last violation trap was sent on that port, relevant only in locked mode with trapping enabled, per the description. Admins use it to gauge how many unauthorized-source packets have accumulated since the last alert on a given locked port, useful for judging the intensity of an ongoing intrusion attempt between trap notifications. For example, a rapidly climbing count on one port between traps would tell the admin that port is under sustained, repeated unauthorized-access attempts rather than a single isolated incident.