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CHAPTER 10: SECURITY
- Shutdown: The Port Security service is enabled by at least the Limit Control user module, and that module has indicated that
the limit is exceeded. No MAC addresses can be learned on the port until it is administratively re-opened on the Limit Control
configuration Web-page.
MAC Count (Current, Violating, Limit): The three columns indicate the number of currently learned MAC addresses (forwarding
as well as blocked), the number of violating MAC addresses (only counting in Restrict mode) and the maximum number of MAC
addresses that can be learned on the port, respectively. If no user modules are enabled on the port, the Current column will show a
dash (-). If Port Security is not administratively enabled on the port, the Violating and Limit columns will show a dash (-).
Buttons
Auto-refresh: Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
Refresh: Click to refresh the page immediately.
Click the port number to see the status for this particular port.
FIGURE 10-17. PORT SECURITY STATUS
PARAMETER DESCRIPTION
MAC Address & VLAN ID: The MAC address and VLAN ID that is seen on this port. If no MAC addresses are learned, a single row
stating “No MAC addresses attached” is displayed.
State: Indicates whether the corresponding MAC address is blocked or forwarding. In the blocked state, it will not be allowed to
transmit or receive traffic.
Time of Addition: Shows the date and time when this MAC address was first seen on the port.
Age/Hold: If at least one user module has decided to block this MAC address, it will stay in the blocked state until the hold time
(measured in seconds) expires. If all user modules have decided to allow this MAC address to forward, and aging is enabled, the
Port Security module will periodically check that this MAC address still forwards traffic. If the age period (measured in seconds)
expires and no frames have been seen, the MAC address will be removed from the MAC table. Otherwise a new age period will
begin. If aging is disabled or a user module has decided to hold the MAC address indefinitely, a dash (-) will be shown.
Buttons:
Auto-refresh: Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
Refresh: Click to refresh the page immediately.
Clear: Click to remove this particular MAC addresses from MAC table.
Port 1: Select the port for which you want to display the Port Security Status.
Back: Click to go back Port Security Status.
