This object is used to control the addressed connUnit's port. Valid commands are: resetConnUnitPort: If the addressed connUnit allows this operation to be performed to this port, the addressed port performs a vendor-specific 'reset' operation. Examples of these operations are: the Link Reset protocol, the Loop Initialization protocol, or a resynchronization occurring between the transceiver in the addressed port to the transceiver that the port is connected to. bypassConnUnitPort: If the addressed connUnit allows this operation to be performed to this port, the addressed port performs a vendor-specific 'bypass' operation. Examples of these operations are: transitioning from online to offline, a request(NON-PARTICIPATING) command to the Loop Port state machine, or removal of the port from an arbitrated loop by a hub. unbypassConnUnitPort: If the addressed connUnit allows this operation to be performed to this port, the addressed port performs a vendor-specific 'unbypass' operation. Examples of these operations are: the Link Failure protocol, a request(PARTICIPATING) command to the Loop Port state machine, or addition of the port to an arbitrated loop by a hub. offlineConnUnitPort: If the addressed connUnit allows this operation to be performed to this port, the addressed port performs a vendor-specific 'offline' operation. Examples of these operations are: disabling a port's transceiver, the Link Failure protocol, request(NON-PARTICIPATING) command to the Loop Port state machine, or removal of the port from an arbitrated loop by a hub. onlineConnUnitPort: If the addressed connUnit allows this operation to be performed to this port, the addressed port performs a vendor-specific 'online' operation. Examples of these operations are: enabling a port's transceiver, the Link Failure protocol, request(PARTICIPATING) command to the Loop Port state machine, or addition of the port from an arbitrated loop by a hub. resetConnUnitPortCounters: If the addressed connUnit allows this operation to be performed to this port, the addressed port statistics table counters will be set to zero. NOTE: Each implementation may chose not to allow any or all of these values on a SET. On a read, if you do not support write, then return invalid. Otherwise return the last control operation attempted.