"port_control" : {
    "port_a": {
        "_1000tx_fd": boolean,
        "_100tx_fd": boolen,
        "_100tx_hd": boolen,
        "_10tx_fd": boolen,
        "_10tx_hd": boolen,
        "asymmetric_pause": boolen,
        "auto_negotiation": boolen,
        "force_master_slave": boolean,
        "master": boolean,
        "symmetric_pause": boolen
    },
    "port_b": {
        "_1000tx_fd": boolen,
        "_100tx_fd": boolen,
        "_100tx_hd": boolen,
        "_10tx_fd": boolen,
        "_10tx_hd": boolen,
        "asymmetric_pause": boolen,
        "auto_negotiation": boolen,
        "force_master_slave": boolean,
        "master": boolean,
        "symmetric_pause": boolen
    },
    "span" : boolean
}