This read-write Integer32 counts the number of fragments on this MP link that were discarded, for reasons such as receiving bad fragments or failing to reassemble a packet, according to its source description. An admin watches this counter to spot multilink links with reassembly problems, since a rising count points to link-quality or configuration issues affecting fragment handling. For instance, a jump from 0 to several hundred discarded fragments over a short polling interval would flag that bundle for further diagnosis.