Linksys SRW2008 User Manual
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Chapter 5: Using the Web-based Utility for Configuration
Security Tab - Port Security
WebView Switches
Locked port security also enables storing a list of MAC addresses in the configuration file. The MAC address list
can be restored after the device has been reset.
Disabled ports are activated from the Port Security page.
Interface. Displays the port or LAG name.
Lock Interface. Selecting this option locks the specified interface.
Learning Mode. Defines the locked port type. The Learning Mode field is enabled only if Locked is selected in the
Interface Status field.The possible field values are:
•
Classic Lock. Locks the port using the classic lock mechanism. The port is immediately locked,
regardless of the number of addresses that have already been learned.
•
Limited Dynamic Lock. Locks the port by deleting the current dynamic MAC addresses associated with
the port. The port learns up to the maximum addresses allowed on the port. Both relearning and aging
MAC addresses are enabled.
In order to change the Learning Mode, the Lock Interface must be set to Unlocked. Once the mode is changed, the
Lock Interface can be reinstated.
Max Entries. Specifies the number of MAC addresses that can be learned on the port. The Max Entries field is
enabled only if Locked is selected in the Interface Status field. In addition, the Limited Dynamic Lock mode is
selected. The default is 1.
Action on Violation. Indicates the action to be applied to packets arriving on a locked port. The possible field
values are:
•
Discard. Discards packets from any unlearned source. This is the default value.
•
Forward Normal. Forwards packets from an unknown source without learning the MAC address.
•
Discard Disable. Discards packets from any unlearned source and shuts down the port. The port remains
shut down until reactivated, or until the device is reset.
Enable Trap. Enables traps when a packet is received on a locked port.
Trap Frequency. The amount of time (in seconds) between traps. The default value is 10 seconds.