Indicates whether port should perform Remote Loopback. When on (3), outbound traffic is returned to the ingress port. In other words, traffic comes from one of the module's other ports to get to this one, and upon arriving here gets sent back to that other port, from where it continues on back to the originator of the traffic. The related object nbsCmmcPortLoopback may be forced off(2) whenever this object is set to on(3).