perfSONAR User Q&A and Other Discussion

["Jeff W. Boote" <>]

On Oct 31, 2008, at 9:30 AM, Jeff W. Boote wrote:

> It would be easier to help you if you actually showed the command  
> you ran, and the error messages you saw - including syslog messages.
>
> However I'll make my best guess: This message likely indicates a  
> firewall issue. The bwctld <sender> attempts to contact the bwctld  
> <receiver> process to exchange time stamp information, and to verify  
> that the <receiver> really did want the test. (This is because all  
> traffic up till now has been initiated by the client, and bwctl runs  
> a bandwidth test between two servers.)
>
> The port range that will be used, is defined by the 'sending' side  
> of the test, and can be set using the peer_ports option in the  
> bwctld.conf file on that system.

Sigh- that is what I get for sending email before my morning coffee...  
The port range is defined by the 'receiving' side. (Which opens up a  
new tcp listening port not related to the bwctl-control port.)


> jeff
>
> On Oct 31, 2008, at 12:49 AM, 
>
>  wrote:
>
> > 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