The udp bandwith test

[terral001]

The server is win10 ,iperf3 3.1.3,run the command iperf3.exe -s
Th client is win11 ,the same version
when the clinent iperf3.exe -c 192.168.68.145 -u -b 100m it seems lost 85%

[ 4] 0.00-10.00 sec 118 MBytes 99.1 Mbits/sec 0.678 ms 12729/14996 (85%)
when use the -R ,the lost change
C:\iperf>iperf3.exe -c 192.168.68.145 -b 100m -u -R
[ 4] 0.00-10.00 sec 113 MBytes 95.2 Mbits/sec 0.141 ms 0/14518 (0%)

[davidBar-On]

@terral001, you are using a very old version of iperf3. I am not sure whether this is the reason for the results you see, but it will help if you will use a newer version. Newer iperf3 version for Windows is available here (although not an official iperf3 site - maintained by BudMan).

Can you also send the output from the server side? (whether you will use a new iperf3 version or not.)

[bmah888]

In addition, providing some information about the test setup (what kind/speed of network links between the client and server?) might help also.

Bruce.