perfSONAR User Q&A and Other Discussion

Hi all:
I try to run the bwctl tool from the command line, I set the "bwctl -s 
<server IP>" in client, but the client window 
shown the message "bwctl: 25 seconds until test results available
RECEIVER START
bwctl: Remote 'sender' never initiated handshake - canceling
RECEIVER END
"
What's the problem? How can I use bwctl's tool(iperf) to run in the command 
line ?

Best regards,

Vicky