/CLEAR_COUNTERS=(keyword,...)

    Determines which counters to clear when trying to resolve
    performance problems. The default is to clear all counters. With
    this qualifier, you can specify one or more of the following
    keywords:

    Keyword          Description

    ALL              Resets all counters.
    BAD_FCS_PACKETS  Resets the count of packets with a bad frame
                     check sequence (FCS).
    DATA_LOST        Resets the count of lost characters that were
                     reported by hardware.
    DROPPED_         Resets the count of all characters thrown away.
    CHARACTERS
    FRAMING_ERRORS   Resets the count of characters with framing
                     errors.
    LONG_PACKETS     Resets the count of packets longer than the
                     current maximum receive unit (MRU) setting.
    RECEIVED_        Resets the count of total packets received.
    PACKETS
    RUNT_PACKETS     Resets the count of packets with too few
                     characters.
    TOTAL_           Resets the count of all characters received.
    CHARACTERS
    TRANSMITTED_     Resets the count of total packets transmitted.
    PACKETS