perfSONAR User Q&A and Other Discussion

[Jason Zurawski <>]

Vicky;


> Hi all:
> I try to run the bwctl tool from the command line, I set the "bwctl -T iperf -s <server IP>" 
> in client and set "bwctl -c" in server, 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 user bwctl's tool(iperf) to run in the command 
> line ?


Please read all of the instructions before proceeding, they describe the 
proper steps to take:

http://e2epi.internet2.edu/bwctl/#Build

Note that 'bwctl' is the client program, and 'bwctld' is the server. 
The server will be started as such (using the -Z option here to keep the 
server open in the terminal and the bwctld.conf file is installed in 
'/usr/local/etc'):


USER@HOST1:~$
 /usr/local/bin/bwctld -Zc /usr/local/etc
bwctld[22356]: FILE=bwctld.c, LINE=1573, The data_dir option has been 
depricated, ignoring...
bwctld[22356]: FILE=nuttcp.c, LINE=175, NuttcpAvailable(): We were 
unable to verify that nuttcp is working. Likely you do not have it 
installed. exit status: 1: output: exec(nuttcp): No such file or directory


And the client should work as such:


USER@HOST2:~$
 bwctl -c HOST1
bwctl: Using tool: iperf
bwctl: 22 seconds until test results available

RECEIVER START
bwctl: exec_line: iperf -B HOST1 -s -f b -m -p 5002 -t 10
bwctl: start_tool: 3434434010.222274
------------------------------------------------------------
Server listening on TCP port 5002
Binding to local address HOST1
TCP window size: 87380 Byte (default)
------------------------------------------------------------
[ 15] local HOST1 port 5002 connected with HOST2 port 5002
[ ID] Interval       Transfer     Bandwidth
[ 15]  0.0-10.1 sec  59973632 Bytes  47345214 bits/sec
[ 15] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
bwctl: stop_exec: 3434434030.351189


or


USER@HOST2:~$
 bwctl -s HOST1
bwctl: Using tool: iperf
bwctl: 29 seconds until test results available

RECEIVER START
bwctl: exec_line: /usr/local/bin/iperf -B HOST2 -s -f b -m -p 5001 -t 10
bwctl: start_tool: 3434434168.196122
------------------------------------------------------------
Server listening on TCP port 5001
Binding to local address HOST2
TCP window size: 87380 Byte (default)
------------------------------------------------------------
[ 14] local HOST2 port 5001 connected with HOST1 port 5001
[ 14]  0.0-10.1 sec  58490880 Bytes  46450766 bits/sec
[ 14] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
bwctl: stop_exec: 3434434188.695510

RECEIVER END


Thanks;

-jason