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Viewing MAC Table Details

The router learns unicast media access control (MAC) addresses to avoid flooding the packets to all the ports in a bridge domain. The router creates a source MAC entry in its source and destination MAC tables for each MAC address learned from packets received on ports that belong to the bridge domain. If the bridge domain receives a control protocol data unit (PDU) which does not have a corresponding protocol configured, then the control PDU is considered as an unknown multicast data packet and the packets are flooded across all the ports that are part of the same bridge domain. If the bridge domain has the protocol corresponding to the PDU configured , then the control PDU is considered as a control packet and is processed by the routing engine.

MAC table aging ensures that a device tracks only active nodes on the network and that it is able to flush out network nodes that are no longer available. To manage MAC entries more efficiently, you can configure an entry’s aging time, which is the maximum time that an entry can remain in the MAC address table before it is deleted because it has reached its maximum age.

To view the learned MAC address information for a device associated with a particular service:

  1. From the View selector, select Service View.

    The functionalities that you can configure in this view are displayed on the View pane.

  2. Click the Monitor mode icon in the Service View of the Connectivity Services Director banner.

    The workspaces that are applicable to this mode are displayed on the Tasks pane.

  3. From the Service View pane, select the type of service for which you want to view interface statistics.

    The service statistical details are displayed in the middle pane.

  4. From the Tasks pane, which is displayed on the right, select Tasks > Show MAC Table.

    The MAC Table dialog box is displayed. The name of the service is displayed in the Service Name field.

  5. From the Devices drop-down list, select the device for which you want to view the MAC table statistical details.

    The following information is displayed in the lower pane of the dialog box in a tabular grid.

    • MAC address—MAC address or addresses learned on a logical interface.

    • Interface—Name of the logical interface

    • Packets—Number of processed packets corresponding to the MAC address

    • Bytes—Number of processed bytes corresponding to the MAC address

    • Expiring—Aging time after which the MAC address expires and is not retained in the MAC table

  6. Click Close after you complete viewing the details.

    You are returned to the main or home page in Monitor Mode of Service View, which is the Service Summary tab.