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enabled).
Port Configuration
The table has one row for each port on the switch and a number of columns, which are:
Port
The port number to which the configuration below applies.
Mode
Controls whether Port Security is enabled on this port. Notice that other modules may still use the
underlying port security features without enabling Port Security on a given port.
Limit
The maximum number of MAC addresses that can be secured on this port. This number cannot exceed 1023.
Default is 4. If the limit is exceeded, an action is taken corresponding to the violation mode.
The switch is "born" with a total number of MAC addresses from which all ports draw whenever a new MAC
address is seen on a Port Security-enabled port. Since all ports draw from the same pool, it may happen that
a configured maximum cannot be granted, if the remaining ports have already used all available MAC
addresses.
Violation Mode
If Limit is reached, the switch can take one of the following actions:
Protect
: Do not allow more than Limit MAC addresses on the port, but take no further action.
Restrict
: If Limit is reached, subsequent MAC addresses on the port will be counted and marked as violating.
Such MAC addreses are removed from the MAC table when the hold time expires. At most Violation
Limit MAC addresses can be marked as violating at any given time.
Shutdown
: If Limit is reached, one additional MAC address will cause the port to be shut down. This implies
that all secured MAC addresses be removed from the port, and no new addresses be learned. There are
three ways to re-open the port:
1) In the "Configuration→Ports" page's "Configured" column, first disable the port, then restore the original
mode.
2) Make a Port Security configuration change on the port.
3) Boot the switch.
Violation Limit
The maximum number of MAC addresses that can be marked as violating on this port. This number cannot
exceed 1023. Default is 4. It is only used when Violation Mode is
Restrict
.
State
This column shows the current Port Security state of the port. The state takes one of four values:
Disabled
: Port Security is disabled on the port.
Ready
: The limit is not yet reached. This can be shown for all violation modes.
Limit Reached
: Indicates that the limit is reached on this port. This can be shown for all violation modes.
Shutdown
: Indicates that the port is shut down by Port Security. This state can only be shown if violation
mode is set to
Shutdown
.
Buttons
Refresh
: Click to refresh the page. Note that non-committed changes will be lost.
Submit
: Click to submit changes.
Reset
: Click to undo any changes made locally and revert to previously saved values.
