The value of tmnxVdoIfEgressQosPolicyId specifies the row index
in the TIMETRA-QOS-MIB::tSapEgressTable corresponding to this
egress QoS policy. It has a value of '1' if no policy is specified.
The value of this object can be set only when the value of
tmnxVdoIfVdoGrpId has been set to a value other than '0'.