This object, when written, would associate the port with the selected ring, provided this option is available for this port and and the MIM the port resides on lies within the domain of the managing device. If this option is not available, or should the MIM on which the port resides lie outside of the domain of the managing device, any write requests will result in the SNMP error BadValue being returned. When read, this object will return either a value indicating which ring the port is associated with or notAvailable if this function is not supported. If the MIM on which the port resides lies outside of the domain of the managing device, all read requests will return notAvailable. 0 - MIM does not support function 1..200 - Fnb ring 1 to Fnb ring 200 201..254 - AUX ring 1 to AUX ring 54