perfSONAR User Q&A and Other Discussion

[Jason Zurawski <>]

Hi Madhav;

Some additional comments inline:

On 9/29/10 6:02 PM, 

 wrote:
> Yes OWAMP daemon deployment looks client-server so
>
> I can trigger from
> (1)  my machine to say nms-rthr.atla.net.internet2.edu
>
> but not between say
>
> (2)  nms-rthr.atla.net.internet2.edu and nms-rthr.hous.net.internet2.edu which
> is what i would like to do.
>
> With the BWCTL tool i am able to trigger measurements between pair of hosts
> (like 2 above) but not with OWAMP


Correct, BWCTL supports the 'third party' measurement (e.g. trigger a 
measurement between Host A and Host B from Host C), OWAMP cannot do 
this.  At least in the case of getting OWAMP measurements between the 
hosts on Internet2/ESnet you can rely on the perfSONAR-BUOY MA.  OWAMP 
tests between all PoPs are done constantly, doing something on-demand 
would not be needed.


> Im guessing you have been able to trigger on-demand BWCTL measurements between
> the below hosts and the ones in Europe.
>
> It seems to me that these nodes dont have the Perfsonar PS toolkit deployed on
> them and just have the BWCTL MP deployed. What do you think?


The hosts listed below just run the daemon, not an MP or an MA.  The MA 
for Internet2 is on a different host (what I sent in a previous mail).

Good Luck;

-jason


> Since i need to able to do a mesh traceroute as well I will have to find a
> mechanism to do so between these hosts.
>
>
> Thanks again!
>
> Madhav
>
>
>
>
>
>
>
> Victor 
> Saez<>
> to      
>
> date    Wed, Sep 29, 2010 at 5:37 PM
> subject Re: Re: [perfsonar-user] OWAMP MP's
> signed-by       gmail.com
>
> I got more hosts with BWCTL enabled on US on another mail:
>
> nms-rthr.atla.net.internet2.edu
> nms-rthr.hous.net.internet2.edu
> nms-rthr.wash.net.internet2.edu
> nms-rthr.newy.net.internet2.edu
> nms-rthr.chic.net.internet2.edu
> nms-rthr.kans.net.internet2.edu
> nms-rthr.hous.net.internet2.edu
> nms-rthr.losa.net.internet2.edu
> nms-rthr.seat.net.internet2.edu
>
> I can't tell you much about OWAMP, I'm also making the final research but I'm
> not using OWAMP (but I'll take a look if I've got time), so I can't tell you
> about it.
>
> With a quick view I see it's client to server, so you could check the
> measurements to (p.ex) one of the servers above, but you would need to do the
> same the other way, is that what you mean?
>
> Kind regards,
>
>
> 2010/9/29<>
> Hi Victor
>
> Thanks for replying!!
>
> Yes perfsonarUI MP's are the only BWCTL MP's that I have seen so far. However
> it looks to me that these are just standalone BWCTL MP's and not a deployment
> of perfsonarBOUY service, as I was not able to retrieve these service points
> by querying home look up services or get the ps toolkit homepage similar to
> http://149.165.225.223/ for these sites
>
> Besides collecting the bandwidth via BWCTL and rtt and loss via OWAMP,  I also
> want to be able to perform a mesh traceroute between the nodes and I have not
> been able to find a mechanism to do so with these stand alone MPs ( I am able
> to do so if a site has a perfsonarBOUY service deployment)
>
>
>  From whatever my understanding is so far it looks to me that the link
>
> http://ndb1.internet2.edu/perfAdmin/directory.cgi
>
> only has the servicePoints for OWAMP and BWCTL MA's and not the MP's which is
> what I am looking for.
>
>
> I know we can use the BWCTL Daemons listed in the above link to trigger
> bandwidth measurement between any two nodes using the BWCTL command line tool,
> do you know of some way I can do this for OWAMP,
>
> I think it is only possible for me to do a test between my machine and a
> machine having the OWAMP deamon.. but can i trigger it between any two nodes ?
>
> Thanks!
> Madhav