David Bar-On

@PreetiMSobarad unfortonattely I don't see much additional useful information in the new log files. I am surprised that the 180 seconds test did not timeout, as it seems that that...

Hi @PreetiMSobarad, from the logs it is quite clear that for some reason the Windows computer Tx bandwidth is very limited - few 10s of KB/sec. The reason Tx from...

@PreetiMSobarad, from the Wireshark logs it seems that the main issue is related to fragmentation. In both cases, TCP sends packets of up to about _1460*10_ bytes with "don't fragment"....

Hi, searching the internet it seem that setting MSS on Windows is not supported .... In any case, since all interfaces are with MTU 1500 that wouldn't help anyway. Also,...

Hi @PreetiMSobarad, the "**LSOdisabled**" Wireshark log shows that **test was successful** - over 330MB were successfully send during the 10 seconds (for some reason each chunk sent is 1536 bytes,...

@PreetiMSobarad, can you **update about the status** of the problem? Did it help to disable the LSO? Did anything else help?

@PreetiMSobarad , thanks. I have created issue #1029 with suggested documentations based on the debug steps suggested for this issue. You can close this issue.

@wongex23, there are several potential causes for this issue. Please send the commands you used and the client input. Also specify which iperf3 version you are using you should send...

@FudiHub, few questions: 1. Did you try running one directional test, i.e. without the `--bidir` - both from client to server and from server to client (using `-R`)? 2. I...

Few tests that may help to better understand what may be the problem (when MTU is 9000): 1. Find the Path MTU for both directions. May be done using `ping`...