Chapter 5Setup and ConfigurationRUGGEDCOM ROX IIUser Guide690 Managing Static MAC Addresses12Figure 811: MAC Tables1. MAC Aging Time Box 2. MAC Age on Loss Box3. Configure the following parameter(s) as required:Parameter DescriptionMAC Aging Time (sec) Default: 300The time a learned MAC address is held before being aged out.MAC Age on Loss Default: trueWhen link failure (and potentially a topology change) occurs, the switch may have someMAC addresses previously learned on the failed port. As long as those addresses arenot aged-out, the switch will still be forwarding traffic to that port, thus preventing thattraffic from reaching its destination via the new network topology. This parameter allowsthe aging-out of all MAC addresses learned on a failed port immediately upon link failuredetection.4. Click Commit to save the changes or click Revert All to abort. A confirmation dialog box appears. Click OKto proceed.5. Click Exit Transaction or continue making changes.Section 5.33.4Managing Static MAC AddressesStatic MAC addresses must be configured when the device is only able to receive frames, not transmit them.They may also need to be configured if port security (if supported) must be enforced.Prioritized MAC addresses are configured when traffic to or from a specific device on a LAN segment is to beassigned a higher CoS priority than other devices on that LAN segment.The following sections describe how to configure and manage static MAC addresses:• Section 5.33.4.1, “Viewing a List of Static MAC Addresses”• Section 5.33.4.2, “Adding a Static MAC Address”• Section 5.33.4.3, “Deleting a Static MAC Address”
