Problem with IPERF


Hello @list!

I am would like to use IPERF v 2.0.2 from source to performance my network connection between two nodes, wich are link each other with a CAT 6 cross Giga cable...

I run the A-node this command:
iperf -s


And I run some test from B-node: 1. iperf -c 10.0.0.1 -t 30 2>&1 The output: [ 3] local 10.0.0.2 port 60779 connected with 10.0.0.1 port 5001 [ 3] 0.0-30.0 sec 3.29 GBytes 941 Mbits/sec

It was success!

2.,
iperf -c 10.0.0.1 -d -t 30 2>&1
Out:
[  4] local 10.0.0.2 port 60780 connected with 10.0.0.1 port 5001
[  5] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 47810
[  4]  0.0-30.0 sec  2.82 GBytes    806 Mbits/sec
[  5]  0.0-30.0 sec  2.82 GBytes    806 Mbits/sec

SUCCESS!
3.,
iperf -c 10.0.0.1 -P10 -t 30 2>&1
Out:
[ 12] local 10.0.0.2 port 60790 connected with 10.0.0.1 port 5001
[  4] local 10.0.0.2 port 60782 connected with 10.0.0.1 port 5001
[  5] local 10.0.0.2 port 60783 connected with 10.0.0.1 port 5001
[  8] local 10.0.0.2 port 60786 connected with 10.0.0.1 port 5001
[  7] local 10.0.0.2 port 60785 connected with 10.0.0.1 port 5001
[  6] local 10.0.0.2 port 60784 connected with 10.0.0.1 port 5001
[  9] local 10.0.0.2 port 60787 connected with 10.0.0.1 port 5001
[ 10] local 10.0.0.2 port 60788 connected with 10.0.0.1 port 5001
[  3] local 10.0.0.2 port 60781 connected with 10.0.0.1 port 5001
[ 11] local 10.0.0.2 port 60789 connected with 10.0.0.1 port 5001
[ 12]  0.0-30.0 sec    335 MBytes  93.8 Mbits/sec
[  4]  0.0-30.0 sec    334 MBytes  93.3 Mbits/sec
[  6]  0.0-30.0 sec    335 MBytes  93.6 Mbits/sec
[  9]  0.0-30.0 sec    351 MBytes  98.2 Mbits/sec
[ 10]  0.0-30.0 sec    333 MBytes  93.2 Mbits/sec
[  3]  0.0-30.0 sec    335 MBytes  93.7 Mbits/sec
[ 11]  0.0-30.0 sec    337 MBytes  94.1 Mbits/sec
[  5]  0.0-30.0 sec    336 MBytes  94.1 Mbits/sec
[  8]  0.0-30.0 sec    334 MBytes  93.4 Mbits/sec
[  7]  0.0-30.0 sec    335 MBytes  93.8 Mbits/sec
[SUM]  0.0-30.0 sec  3.29 GBytes    941 Mbits/sec

SUCCESS!



BUT:
4.,
iperf -c 10.0.0.1 -d -P10 -t 30 2>&1
Out on the A-node:
write2 failed: Broken pipe
write2 failed: Broken pipe
write2 failed: Broken pipe
connect failed: Connection refused
connect failed: Connection refused
connect failed: Connection refused
connect failed: Connection refused
connect failed: Connection refused
connect failed: Connection refused
connect failed: Connection refused
[ 76] local 0.0.0.0 port 40785 connected with 10.0.0.2 port 5001
[ 76]  0.0- 0.0 sec  0.00 Bytes  0.00 bits/sec
[ 25] local 0.0.0.0 port 40776 connected with 10.0.0.2 port 5001
[ 25]  0.0- 0.0 sec  0.00 Bytes  0.00 bits/sec
[ 28] local 0.0.0.0 port 40777 connected with 10.0.0.2 port 5001
[ 28]  0.0- 0.0 sec  0.00 Bytes  0.00 bits/sec
[ 43] local 0.0.0.0 port 40778 connected with 10.0.0.2 port 5001
[ 43]  0.0- 0.0 sec  0.00 Bytes  0.00 bits/sec
[ 44] local 0.0.0.0 port 40779 connected with 10.0.0.2 port 5001
[ 44]  0.0- 0.0 sec  0.00 Bytes  0.00 bits/sec

And on the B-node everything looks good:
[  3] local 10.0.0.2 port 37181 connected with 10.0.0.1 port 5001
[  6] local 10.0.0.2 port 37184 connected with 10.0.0.1 port 5001
[  7] local 10.0.0.2 port 37186 connected with 10.0.0.1 port 5001
[  4] local 10.0.0.2 port 37182 connected with 10.0.0.1 port 5001
[  9] local 10.0.0.2 port 37187 connected with 10.0.0.1 port 5001
[ 10] local 10.0.0.2 port 37188 connected with 10.0.0.1 port 5001
[ 11] local 10.0.0.2 port 37189 connected with 10.0.0.1 port 5001
[  8] local 10.0.0.2 port 37185 connected with 10.0.0.1 port 5001
[ 14] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40699
[ 15] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40700
[ 12] local 10.0.0.2 port 37190 connected with 10.0.0.1 port 5001
[ 16] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40701
[ 17] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40702
[ 18] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40703
[  5] local 10.0.0.2 port 37183 connected with 10.0.0.1 port 5001
[ 19] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40704
[ 20] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40705
[ 21] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40706
[ 22] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40707
[ 23] local 10.0.0.2 port 5001 connected with 10.0.0.1 port 40708
[  3]  0.0-30.0 sec    329 MBytes  92.0 Mbits/sec
[  6]  0.0-30.0 sec    327 MBytes  91.6 Mbits/sec
[  7]  0.0-30.0 sec    328 MBytes  91.6 Mbits/sec
[  4]  0.0-30.0 sec    328 MBytes  91.6 Mbits/sec
[  9]  0.0-30.0 sec    329 MBytes  91.9 Mbits/sec
[ 10]  0.0-30.0 sec    327 MBytes  91.5 Mbits/sec
[ 11]  0.0-30.0 sec    313 MBytes  87.6 Mbits/sec
[  8]  0.0-30.0 sec    328 MBytes  91.7 Mbits/sec
[  5]  0.0-30.0 sec    329 MBytes  91.9 Mbits/sec
[ 14]  0.0-30.0 sec    325 MBytes  90.9 Mbits/sec
[ 12]  0.0-30.0 sec    316 MBytes  88.4 Mbits/sec
[SUM]  0.0-30.0 sec  3.18 GBytes    910 Mbits/sec
[ 16]  0.0-30.0 sec    326 MBytes  91.3 Mbits/sec
[ 17]  0.0-30.0 sec    326 MBytes  91.2 Mbits/sec
[ 18]  0.0-30.0 sec    326 MBytes  91.2 Mbits/sec
[ 15]  0.0-30.0 sec    327 MBytes  91.3 Mbits/sec
[ 19]  0.0-30.0 sec    327 MBytes  91.5 Mbits/sec
[ 20]  0.0-30.0 sec    325 MBytes  90.8 Mbits/sec
[ 21]  0.0-30.0 sec    325 MBytes  90.8 Mbits/sec
[ 22]  0.0-30.0 sec    326 MBytes  91.0 Mbits/sec
[ 23]  0.0-30.0 sec    327 MBytes  91.5 Mbits/sec
[SUM]  0.0-30.0 sec  3.18 GBytes    911 Mbits/sec


It is a BUG or there are some problem with my network!


Sorry for the long message! Regards, Balázs



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