perfSONAR User Q&A and Other Discussion

[Fausto Vetter <>]

Hi,

Do you know if some firewall at the network router may be blocking it? 
About any public BWCTL daemon, I really dont know. By the way, does 
anyone know if there is any bwctl daemon for testing purposes?

Hum.. I was thinking one thing that might be affecting: do you have any 
tomcat server in one of these MPs? may you verify which ports are open 
in both server? by the way, is there any 50xx port open either in UDP or 
TCP?

Just wondering...

Cheers,
Fausto

Rodesch Christian wrote:
> Hi Fausto,
>
> I totally disabled iptables for a new test, and the result is the 
> same, so I think that the problem doesn't come from my host but from 
> the other one. Maybe the other host blocked every stranger networks to 
> protect their network from too many bandwidth measurements? Do you 
> know any servers where I could test BWCTL MP without restrictions or 
> authentication. This would help me to locate the problem.
>
> Thanks for your help
>
> Christian
>
> Fausto Vetter wrote:
> > Hi,
> >
> > More information on this issue you can observe in: 
> > http://kb.pert.geant2.net/PERTKB/BwctlToolInfo
> >
> > If the problem is firewall, try to define which port will be used by 
> > bwctl (iperf ports can be defined on bwctld.conf file / command line)
> >
> > Any way, please let us know if you solve this issue.
> >
> > Fausto
> >
> > Rodesch Christian wrote:
> > > Hi again,
> > >
> > > I forgot to paste the syslog log:
> > >
> > >    May 19 16:20:17 eomer bwctld[22730]: FILE=sapi.c, LINE=292,
> > >    Connection to (158.64.56.218:4823) from (158.64.56.218:36824)
> > >    May 19 16:20:17 eomer bwctld[22730]: FILE=sapi.c, LINE=448,
> > >    ControlSession([158.64.56.218]:4823) accepted from
> > >    userid(nil):([158.64.56.218]:36824)
> > >    May 19 16:20:17 eomer bwctl: 9 seconds until test results available
> > >    May 19 16:20:22 eomer bwctld[22731]: FILE=endpoint.c, LINE=940,
> > >    Endpoint: Unable to connect to Peer!: Interrupted system call
> > >    May 19 16:20:22 eomer bwctld[22731]: FILE=endpoint.c, LINE=943,
> > >    Endpoint: Signal = 14
> > >
> > > So "Unable to connect to Peer" seems to be the problem, even though 
> > > the peering ports are open.
> > >
> > > Regards,
> > >
> > > Christian
> > >
> > > Fausto Vetter wrote:
> > > > Hi Christian,
> > > >
> > > > Could you run bwctl with the -X option on? This option will enable 
> > > > you observe the source output. It now can be many issues. 
> > > > Otherwise, becomes hard to investigate what is exactly happening.
> > > >
> > > > Thanks,
> > > > Fausto
> > > > Dante's Service Desk
> > > >
> > > > Rodesch Christian wrote:
> > > > > Hello,
> > > > >
> > > > > I was finally able to install the perfsonar MP. After configuring 
> > > > > and testing, I'm now at the point that measuring in one direction 
> > > > > works but in the other doesn't.
> > > > >
> > > > > So I tried to measure using the bwctl command tool and this is the 
> > > > > result:
> > > > >
> > > > >        bwctl -s 193.198.229.166 -c 158.64.56.218
> > > > >        bwctl: 16 seconds until test results available
> > > > >
> > > > >        RECEIVER START
> > > > >        3420191373.062331: iperf -B 158.64.56.218 -P 1 -s -f b -m -p
> > > > >        5002 -t 10
> > > > >        ------------------------------------------------------------
> > > > >        Server listening on TCP port 5002
> > > > >        Binding to local address 158.64.56.218
> > > > >        TCP window size: 87380 Byte (default)
> > > > >        ------------------------------------------------------------
> > > > >        [ 13] local 158.64.56.218 port 5002 connected with
> > > > >        193.198.229.166 port 5002
> > > > >        [ 13]  0.0-10.2 sec  360202240 Bytes  283719091 bits/sec
> > > > >        [ 13] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
> > > > >
> > > > >        RECEIVER END
> > > > >
> > > > > Like I said, measuring in one way (our server as receivehost) 
> > > > > works well but:
> > > > >
> > > > >        eomer:/var/www # bwctl -s 158.64.56.218 -c 193.198.229.166
> > > > >        bwctl: 16 seconds until test results available
> > > > >
> > > > >        RECEIVER START
> > > > >
> > > > >        RECEIVER END
> > > > >
> > > > >
> > > > > Unfortunately if I take our server as sendhost it doesn't work and 
> > > > > I only get the upper output.
> > > > >
> > > > > Is this due to a missing authentication or what else could be the 
> > > > > problem?
> > > > >
> > > > > BTW: I tested with many servers, which I found in the list of 
> > > > > perfSONAR UI, and except some servers which directly ouput "Access 
> > > > > denied", I always get the upper message.
> > > > >
> > > > > Thanks in advance for any help!
> > > > >
> > > > > Christian