Server-Lost-Packets

To detect the loss or reordering of a data packet, the client inserts a sequence ID in the header of every data packet it receives before it returns it to the server.

This column contains the difference between the number of data packets that the server sent and the number the client reported as received.

SNMP ID:
1.96.1.1.12 
Telnet path:
Status > Iperf > Last-Results > UDP