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Thread: Iperf warning message meaning.
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- Join Date
- Jul 2007
Iperf warning message meaning.
I am using iperf packet generator tool in my project. I run iperf on FC6 system.
In UDP transmission mode of iperf i sometimes get following warning message
WARNING: did not receive ack of last datagram after 10 tries.
Could anybody plz tell me what does that mean?
Thanks in advance
- Join Date
- Oct 2008
Same problem here. Something prevented the server end of the link from sending a reply (provide the resulting stats to the client end) even though the server end acknowledged a connection in the beginning.
I was running in UDP mode.
The server end is running a Linux-based firewall (iptables); I even opened up the correct incoming UDP port. While it let the connection through to the server once I opened the firewall, server seems not to be replying.
I did the reverse where the firewall on the server end was a Netgear FVS-something, and it works fine. But I am also running different versions of iperf so this could be a problem.