This object specifies the Loss Measurement OAM message priority
as well as the priority of the service/OAM traffic to be monitored.
Only frames of the same Class of Service are counted.
The default value is to be the value which yields the lowest frame
loss.
This object is not applicable if jnxSoamLmCfgType is set to lmCcm.
This object can only be written at row creation time and cannot be
modified once it has been created.