HP 4100gl manual Flags, Operates as follows, It detects, Intrusion flag, Port

Configuring and Monitoring Port Security

Reading Intrusion Alerts and Resetting Alert Flags

The log shows the most recent intrusion at the top of the listing. You cannot delete Intrusion Log entries (unless you reset the switch to its factory-default configuration). Instead, if the log is filled when the switch detects a new intrusion, the oldest entry is dropped off the listing and the newest entry appears at the top of the listing.

	Keeping the Intrusion Log Current by Resetting Alert
	Flags
	When a violation occurs on a port, an alert flag is set for that port and the
	violation is entered in the Intrusion Log. The switch can detect and handle
	subsequent intrusions on that port, but will not log another intrusion on the
	port until you reset the alert flag for either all ports or for the individual port.
Note on	On a given port, if the intrusion action is to send an SNMP trap and then disable
Send - Disable	the port (send-disable), and the an intruder is detected on the port, then the
Operation	switch sends an SNMP trap, sets the port’s alert flag, and disables the port. If
	you re-enable the port without resetting the port’s alert flag, then the port
	operates as follows:
	■ The port comes up and will block traffic from unauthorized devices
	it detects.
	■ If the port detects another intruder, it will send another SNMP trap,
	but will not become disabled again unless you first reset the port’s
	intrusion flag.
	This operation enables the port to continue passing traffic for authorized
	devices while you take the time to locate and eliminate the intruder. Other-
	wise, the presence of an intruder could cause the switch to repeatedly disable
	the port.
	Menu: Checking for Intrusions, Listing Intrusion Alerts, and
	Resetting Alert Flags
	The menu interface indicates per-port intrusions in the Port Status screen, and
	provides details and the reset function in the Intrusion Log screen.
	1. From the Main Menu select:
	1. Status and Counters
	4. Port Status

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