Disclosed herein are methods and related apparatuses for determining statistics descriptive of packets received at a particular location on a network out of a set of packets transmitted on the network, which include transmitting first and second groups of packets on the network, the packets in the first and second groups labeled with first and second labels, respectively (the packets in the second group not in the first group), incrementing first and second packet counters associated with the particular network location in response to packet(s) in the first and second groups, respectively, being received at the network location until all packets in the first and second groups have drained from the network, and using values read from the first and second packet counters to determine a statistic descriptive of the packets received at the particular network location out of those in the first and second groups transmitted on the network.