Viewing MAC Addresses

The MAC Address Table keeps track of the MAC addresses that are associated with each port. This table allows the device to forward unicast traffic through the appropriate port. The MAC address table is sometimes called the bridge table or the FDB (forwarding database).

Use this page to display information about entries in the MAC address table. The transparent bridging function uses these entries to determine how to forward a received frame.

To display this page, click System > Summary > MAC Address Table in the navigation menu.

To remove dynamically learned FDB table entries, use the Clear button. You can clear all of the learned entries, the entries for a specific interface or VLAN, or the range of entries that match the MAC address and mask combination.

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MAC Address Table Fields

Field Description
VLAN ID The VLAN with which the MAC address is associated. A MAC address can be associated with multiple VLANs.
MAC Address A unicast MAC address for which the switch has forwarding and/or filtering information. The format is a six-byte MAC address, with each byte separated by colons.
Interface The port where this address was learned. The port identified in this field is the port through which the MAC address can be reached.
Interface Index The Interface Index of the MIB interface table entry associated with the source port. This value helps identify an interface when using SNMP to manage the device.
Status Information about the entry and why it is in the table, which can be one of the following:
  • Static – The address has been manually configured and does not age out.
  • Learned – The address has been automatically learned by the device and can age out when it is not in use. Dynamic addresses are learned by examining information in incoming Ethernet frames.
  • Management – The burned-in MAC address of the device.
  • Self – The MAC address belongs to one of the device's physical interfaces.
  • GMRP Learned – The address was added dynamically by the GARP (Generic Attribute Registration Protocol) Multicast Registration Protocol.
  • Other – The address was added dynamically through an unidentified protocol or method.
  • Unknown – The device cannot determine the status of the entry.

Click Refresh to update the information on the screen.