o  command address

    Address the local station uses when sending command frames to the
    remote station.

 o  maintenance mode

    Whether the station is in maintenance mode. When set to true, the
    station will be used exclusively for maintenance operations. When
    set to false, the station operates in normal fashion.

    The limit command sets the value of this attribute to true, and
    the unlimit to false.

 o  protocol state

    State of the data link protocol.

    error          A protocol error occurred. For instance, the
                   logical station received an invalid frame.

    halted         The protocol could not start. For example, there
                   is no client.

    initializing   The protocol is being initialized.

    inoperative    The protocol cannot be started because no contact
                   has been established with the remote station.

    maintenance    The logical station is in maintenance mode.

    resetting      The protocol is resetting after an error.

    running        The protocol is running and capable of exchanging
                   frames with the remote station.

 o  remote version

    Version number of the HDLC protocol that the remote station is
    using. This is received as part of an XID message from the remote
    station.

 o  state

    State of the logical station.

    off      The logical station is off because of a disable command.

    on       The logical station is on because of an enable command.

 o  uid

    Entity's unique identifier, which is generated when the entity is
    created.