    // Additional methods

    /**
     * Returns true if the port is up, i.e., it's neither administratively
     * down nor link down. It currently does NOT take STP state into
     * consideration
     * @return whether the port is up
     */
    boolean isEnabled();

    /**
     * Returns the current generation ID of this port.
     *
     * The generationId is reported by the switch as a @{link OFPortDescProp} in
     * @link{OFPortDescStatsReply} and @link{OFPortStatus} messages. If the
     * current OFPortDesc does not contain a generation Id, returns U64.ZERO;
     *
     * For OpenFlow versions earlier than 1.4, always returns U64.ZERO;
     *
     * @return the generation ID or U64.ZERO if not reported
     * @since 1.4
     */
     public U64 getBsnGenerationId();