# History Table

Device > Configure > MAC > History Table

The History Table dialog box archives the MAC Change Notification messages generated by this device. Messages are archived even if Mac Change Notification messages are not actually sent. The following data is displayed:

- Index (cmnHistIndex)

- MAC Changed Message (cmnHistMacChangedMsg)

- System Up Time (cmnHistTimestamp)

Do one of the following:

- Click OK to continue.

- Click Apply to save the changes in the dialog box.

- Click Cancel to close the dialog box.

- Click Refresh to update the contents of the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access online help.

Index (cmnHistIndex)

Unique identifier for a MAC Change Notification message generated by the device.

MAC Changed Message (cmnHistMacChangedMsg)

Provides information about a MAC Change Notification message. The message displays operation, VLAN, MAC, module, and port information.

System Up Time (cmnHistTimestamp)

Value of sysUpTime when the MAC Changed Notification message containing information provided by the Hist MAC Changed Msg object was generated.