This read-only integer, with no source description provided beyond its name, counts occurrences where the group's frame-sorting buffer overran its capacity while reassembling frames from multiple member links. An administrator would treat a rising count as evidence the sorter's buffering is undersized for the group's traffic volume or link-speed mismatch. For example, adding a higher-speed link into an existing group could cause statGrpSorterOverruns to climb if the sorter buffer was sized for the group's original, slower links.