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724-746-5500 | blackbox.com
Chapter 3: Configuration
Figure 3-49: The MAC Address Table Configuration screen.
Parameter Description
• Aging Configuration: By default, dynamic entries are removed from the MAC table after 300 seconds. This removal is also called
aging.
Configure aging time by entering a value here in seconds. For example, Age time seconds.
The range given should be 10 to 1,000,000 seconds.
Disable the automatic aging of dynamic entries by checking Disable Automatic Aging.
MAC Table Learning Mode
If the Learning Mode for a given port is grayed out, another module is in control of the mode, so that it cannot be changed by
the user. An example of such a module is the MAC-Based Authentication under 802.1X. Each port can “learn“ based upon the
following settings:
• Auto: Learning is done automatically as soon as a frame with unknown SMAC is received.
• Disable: No learning is done.
• Secure: Only static MAC entries are learned, all other frames are dropped.
NOTE: Make sure that the link used for managing the switch is added to the Static MAC Table before changing to secure learning
mode, otherwise the management link is lost and can only be restored by using another non-secure port or by connecting to the
switch via the serial interface.
LGB1108A