This read-only Counter64 counts queries discarded specifically because they arrived before the minimum allowed interval since the previous query. This typically flags a misconfigured or rogue second querier flooding queries faster than the IGMP query interval allows — a cause the general QueryDiscards counter on this instance would not distinguish; because it is drawn from this table's currently-accumulating, short-interval bin, it reflects only the last few minutes of activity, so it's the value to watch for a fast-forming problem rather than a long-term trend. On a residential VLAN used for multicast video delivery, a count of 1,888 over the last 15 minutes is the kind of number an admin would trend against the join/leave rate on the same port to judge whether it's normal channel-surfing or an anomaly worth a closer look.