Mac Address Tables > Configuration - Transition Networks SM TAT4X Series Web User Manual

Transition Networks SMxxTAT4Xx Web User Guide
MAC Address Tables > Configuration
The MAC Address Table is configured on this page. Set timeouts for entries in the dynamic MAC Table and
configure the static MAC table here.
Switching of frames is based on the DMAC address contained in the frame. The switch builds up a table that maps
MAC addresses to switch ports for knowing which ports the frames should go to (based upon the DMAC address
in the frame). This table contains both static and dynamic entries. The static entries are configured by the
network administrator if the administrator wants to do a fixed mapping between the DMAC address and switch
ports.
The frames also contain a MAC address (SMAC address), which shows the MAC address of the equipment sending
the frame. The SMAC address is used by the switch to automatically update the MAC table with these dynamic
MAC addresses. Dynamic entries are removed from the MAC table if no frame with the corresponding SMAC
address has been seen after a configurable age time.
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. The valid range is
10 ‐ 1000000 seconds. Disable the automatic aging of dynamic entries by checking the Disable Automatic Aging
checkbox.
MAC Table Learning: If the learning mode for a given port is greyed 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.
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