Unless stated otherwise, counts include both normal and multicast
    traffic and all protocol types, service access points (SAPs), and
    protocol identifiers.

 o  creation time

    Time at which the port was created.

 o  multicast octets received

    Number of multicast data octets that were successfully received
    and made available to the port user. The count is the number
    of octets in the CSMA/CD user data field and does not include
    MAC (medium access control, a sublayer of the CSMA/CD Data Link
    layer) headers. Comparing this count to the octets received count
    yields the gross percentage of bandwidth that was consumed (over
    time) by multicast PDUs received by the port.

 o  multicast octets sent

    Number of multicast data octets that were successfully sent
    through the port. The count is the number of octets in the MAC
    user data field, including any padding or length fields; it does
    not include MAC headers. Comparing this count to the octets sent
    count yields the gross percentage of bandwidth that was consumed
    (over time) by multicast pdus transmitted by the port.

 o  multicast pdus received

    Number of multicast PDUs that were successfully received and
    made available to the port user. Counted PDUs passed address and
    protocol filtering and were received without errors. Comparing
    this count to the pdus received count yields a gross percentage
    of CSMA/CD usage for multicast pdus received by this port.

 o  multicast pdus sent

    Number of multicast PDUs that were successfully sent through the
    port. Comparing this count to the pdus sent count yields a gross
    percentage of CSMA/CD usage for multicast pdus sent by this port.

 o  octets received

    Total number of MAC user data octets that were successfully
    received and made available to the port user. Counted frames
    passed address and protocol filtering for both individual and
    multicast MAC addresses and were received without errors. The
    count is the number of octets in the CSMA/CD user data field
    plus any padding, Ethernet length fields, or logical link control
    (LLC) header fields; it does not include MAC headers. Adding the
    octets received count to the protocol overhead calculated from
    the pdus received count yields the amount of CSMA/CD bandwidth
    consumed by frames received by the port.

 o  octets sent

    Total number of user data octets that were successfully sent
    through the port. The count is the number of octets in the MAC
    user data field including any padding or length fields; it does
    not include MAC headers. Adding the octets sent count to the
    protocol overhead calculated from the pdus sent count yields the
    amount of CSMA/CD bandwidth consumed (over time) by frames sent
    by the port.

 o  pdus received

    Total number of PDUs that were successfully received and made
    available to the port user. Counted PDUs passed address and
    protocol filtering and were received without errors. The count
    provides a gross measurement of incoming CSMA/CD usage by the
    port.

 o  pdus sent

    Total number of PDUs that were successfully sent through the
    port. The count provides a gross measurement of outgoing CSMA/CD
    usage by the port.

 o  unavailable user buffers

    Number of times that no user buffer was available at the port for
    an incoming frame that passed all filtering for the port. Used
    in conjunction with the pdus received count, this counter can
    indicate the rate of user buffer receive problems.