Configuring and Monitoring Port Security

Reading Intrusion Alerts and Resetting Alert Flags

The Intrusion Alert column shows “Yes” for any port on which a security violation has been detected.

Figure 7-10. Example of Port Status Screen with Intrusion Alert on Port A3

2. Type [I] (Intrusion log) to display the Intrusion Log.

MAC Address of Intruding Device on Port A3

System Time of Intrusion on Port A3

Indicates this intrusion on port A3 occurred prior to a reset (reboot) at the indicated time and date.

Figure 7-11. Example of the Intrusion Log Display

The above example shows two intrusions for port A3 and one intrusion for port A1. In this case, only the most recent intrusion at port A3 has not been acknowledged (reset). This is indicated by the following:

•Because the Port Status screen (figure 7-10on page 7-18)does not indicate an intrusion for port A1, the alert flag for the intru- sion on port A1 has already been reset.

•Since the switch can show only one uncleared intrusion per port, the older intrusion for port A3 in this example has also been previously reset.

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