This object is used to control the addressed fcConnUnit's port. Valid commands are: unknown and invalid are only used as values that are read. resetConnUnitPort (3): If the addressed connectivity unit allows this operation to be performed on 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 (4): If the addressed connectivity unit 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 (5): If the addressed connectivity unit 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 (6): If the addressed connectivity unit 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 (7): If the addressed connectivity unit 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. NOTE: Each implementation may chose not to support SNMP Set operations for any or all of these values. For Sets specifying varbinds for instances of this object and values not supported by a given implementation, the agent will return the SNMP WrongValue PDU error code.