tmnxEthRingNodeId 1.3.6.1.4.1.6527.3.1.2.72.1.1.1.13

The value of tmnxEthRingNodeId specifies the Ethernet Ring Node ID. The default value is the system's MAC address. Writing the MAC address value 00:00:00:00:00:00 to tmnxEthRingNodeId will reset its value to the system's MAC address.