perfSONAR User Q&A and Other Discussion

[Aaron Brown <>]

Hi Andi,

Can you run this on the server host?

iperf -s -B 142.104.17.140 -p 6019

Cheers,
Aaron

On Sep 2, 2014, at 2:34 PM, Andi Bergen 
<>
 wrote:

> Hi Aaron,
> 142.104.17.140 is the server host. Checking with netstat -nlp, port 6019 is 
> not used by anything. 
> 
> The public ip address of the VMs is visible and accessible from outside 
> their private network. 
> Oh, I forgot to mention, sorry: 
> - if I run iperf on these ports, it works. 
> - Running iperf on the client and bwctl on the server does connect. Nothing 
> happens, but then ctrl+c on client does show that a connection was made on 
> the server (iperf).
> - Running bwtcl on the client to iperf on the server works (the returned 
> format is different).
> - logging in from an external network to the public IP address works.  
> 
> We are using OpenStack to orchestrate the VMs. 
> It might be an issue with openstack, because a traceroute looks somewhat 
> funny from 142.104.17.139 to the "server"
> traceroute to 142.104.17.140 (142.104.17.140), 30 hops max, 60 byte packets
>  1  142.104.17.140 (142.104.17.140)  95.876 ms  95.797 ms  95.732 ms
>  2  * * *
>  3  * * *
>  4  * * *
>  5  * * *
>  6  * * *
>  7  * * *
>  8  * * *
>  9  * * *
> 10  * * *
> 11  * * *
> 12  * *^C
> 
> I hope that helps, 
> Andi 
> 
> 
> 142.104.17.139
> 
> On 2014-09-02 11:14 AM, "Aaron Brown" 
> <>
>  wrote:
> Hi Andi,
> 
> I see this error in the server logs:
> 
> > Sep  2 13:01:05 centos bwctld[122131]: FILE=endpoint.c, LINE=319, 
> > bind([142.104.17.140]:6019): Cannot assign requested address
> 
> 
> Does the 142.104.17.140 host have the address 142.104.17.140 configured on 
> it, or is it behind a NAT or something? I’m not sure why it wouldn’t be 
> able to bind to that address.
> 
> Cheers,
> Aaron
> 
> On Sep 2, 2014, at 1:40 PM, Andi Bergen 
> <>
>  wrote:
> 
> > Hi,
> > I am having problems getting the bwctl to run successfully between two
> > of my install locations.
> >
> > I followed the steps outlined here:
> > https://fasterdata.es.net/performance-testing/perfsonar/ps-howto/level-1/
> > and have this installed on two VMs.
> >
> > I downloaded the limits file from:
> > http://stats.es.net/sample_configs/bwctld.limits
> > (which does include a /16 address for our institution).
> >
> > What doesn't work is running
> > bwctl -vv -c 142.104.17.140:4823 -f m -x -a 100
> > or bwctl -vv -c 142.104.17.140 -f m -x -a 100
> >
> > However, running this TO any other machine (I found listed here
> > http://stats.es.net/ServicesDirectory/#search=es) works.
> >
> > It also works just fine when using the internal IP addresses of these
> > machines since they are on the same network.
> >
> > I checked that bwctl is bound on the external interface. And
> > connections are going through, but then fail (please see attached
> > /var/log/messages files for both machines).
> >
> > All UDP and TCP ports are open for machines in the same security
> > group, as well as all ports I could find in the docs are open
> > otherwise. The ports mentioned in the log files are opened.
> >
> > Attached are the /var/log/messages from the VM that is running the
> > test (client.log) and the machine that functions as the "server"
> > (server.log).
> >
> > Did I follow the wrong instructions, or am I missing something
> > obvious? I am somewhat at a loss for what to check next...
> >
> > Thank you,
> > Andi
> > ps.
> > Command line output from "client" bwctl -vv -c 142.104.17.140:4823 -f
> > m -x -a 100
> > (at a different time than the attached log files, but it is always the
> > same except the time stamps of course):
> > bwctl[122582]: FILE=bwctl.c, LINE=2931, Using 10.6.9.19 as the address
> > for local sender
> > bwctl[122582]: FILE=bwctl.c, LINE=2931, Using 142.104.17.140:4823 as
> > the address for remote receiver
> > bwctl[122582]: FILE=bwctl.c, LINE=2977, Available in-common: iperf nuttcp 
> > iperf3
> > bwctl[122582]: FILE=bwctl.c, LINE=3002, Using tool: iperf
> > bwctl[122582]: FILE=bwctl.c, LINE=3117, Requested Time: 1409679438.153914
> > bwctl[122582]: FILE=bwctl.c, LINE=3119, Latest Acceptable Time:
> > 1409680038.153914
> > bwctl[122582]: FILE=bwctl.c, LINE=3292,
> > Reservation(142.104.17.140:4823): 1409679448.061957
> > bwctl[122582]: FILE=bwctl.c, LINE=3156, Server '142.104.17.140:4823'
> > accepted test request at time 1409679448.061957
> > bwctl[122582]: FILE=bwctl.c, LINE=3292, Reservation(localhost):
> > 1409679448.061957
> > bwctl[122582]: FILE=bwctl.c, LINE=3185, Client 'localhost' accepted
> > test request at time 1409679448.061957
> > bwctl[122582]: FILE=bwctl.c, LINE=3359, BWLStartSessions: Failed
> > <server.log><client.log>
>