Indicates the current operational status of the VCL. The up and
down states indicate that the VCL is currently operational, or not
operational, respectively. The Init state indicates the status
of the VCL is in the process of being initialized and has not yet
completed. The 'Not Present' state indicates a problem with that
VCL and is not able to bring the VCC up. The 'misconfig' state
indicates the VC is misconfigured.