Patricia UDP do not reorder the packets, the application must do it. UDP also do not request the retransmission of the packets. So for the application point of view, if it do not reorder the packets they are considered lost. How that helps. Atenciosamente
Alexandre Vilarinho Gerente de Engenharia de Rede IP/TI Tel.: (55 11) 3017-4683 Cel.: (55 11) 7757-8388 Fax: (55 11) 3017-4464 alexandre.vilari...@neovia.com.br www.neovia.com.br <http://www.neovia.net.br/> ---------------------------- <http://www.neovia.net.br/> _____ De: Patricia de Noriega [mailto:pnori...@it.uc3m.es] Enviada em: sexta-feira, 11 de novembro de 2011 08:44 Para: iperf-users@lists.sourceforge.net Assunto: [Iperf-users] Out-of-order packets: are they lost? Hi all, I'm confused about out-of-order packets. Are they considered as lost packets? Below there is an example. Between second 5 and 6, 11 packets lost are detected, then Iperf shows that 11 packets were received out-of-order. The 11 packets lost between senconds 5 and 6 are the same as the out-of-order packets?. [ 3] 5.0- 6.0 sec 8.30 KBytes 68.0 Kbits/sec 1.979 ms 11/ 170 (6.5%) [ 3] 5.0- 6.0 sec 11 datagrams received out-of-order [ 3] 6.0- 7.0 sec 7.81 KBytes 64.0 Kbits/sec 1.962 ms 0/ 160 (0%) [ 3] 7.0- 8.0 sec 7.81 KBytes 64.0 Kbits/sec 1.966 ms 0/ 160 (0%) [ 3] 8.0- 9.0 sec 7.86 KBytes 64.4 Kbits/sec 1.981 ms 0/ 161 (0%) [ 3] 9.0-10.0 sec 7.81 KBytes 64.0 Kbits/sec 1.987 ms 0/ 160 (0%) [ 3] 10.0-11.0 sec 7.23 KBytes 59.2 Kbits/sec 1.986 ms 1/ 149 (0.67%) [ 3] 11.0-12.0 sec 7.81 KBytes 64.0 Kbits/sec 1.977 ms 0/ 160 (0%) [ 3] 12.0-13.0 sec 7.81 KBytes 64.0 Kbits/sec 1.974 ms 0/ 160 (0%) [ 3] 13.0-14.0 sec 7.81 KBytes 64.0 Kbits/sec 1.973 ms 0/ 160 (0%) [ 3] 14.0-15.0 sec 7.81 KBytes 64.0 Kbits/sec 1.965 ms 0/ 160 (0%) [ 3] 15.0-16.0 sec 8.30 KBytes 68.0 Kbits/sec 1.998 ms 1/ 171 (0.58%) [ 3] 15.0-16.0 sec 9 datagrams received out-of-order Thanks in advance. Best regards
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