h3cRrppRingPrimaryPort 1.3.6.1.4.1.43.45.1.10.2.45.2.2.1.6

If the switch is a master-node or transit-node, this value is the primary port ifIndex; otherwise, if the switch is a edge-node or assistant-edge-node, this value is the common port ifIndex. This value can't be modified after created.