perfsonar development work

[Nina Jeliazkova <>]

Michael Bischoff wrote:
> (I'm not up completely to speed with LS affairs so forgive me if I make 
> stupid remarks ;)
>
> That makes sense, be can we facilitate the whole process currently? Don't we 
> also need to ask
> (a) service(s) to identify the network topology elements? If not the current 
> structure of the
> topology itself.
>
> Through google I stumpled upon this:
> http://www.ogf.org/OGF21/materials/895/topoSchema-OGF21.pdf (how much of the 
> doc is still
> accurate btw)
>
> Use Case:
>   A client would use a topology service to look
>   up the identifier for a network element and
>   then would query a lookup service using the
>   identifier to find the measurements
>   associated with that element.
>
> Obtaining a topology service must also be retrieved from a LS? right?
>
> Also level 1 ls client api seems to include eventType? is that the same as we 
> are talking about?
> http://anonsvn.internet2.edu/svn/nmwg/trunk/nmwg/doc/dLS/gLS/phase_1_color.html#level1_api
> Are topology elements identified by Ip adress/dns name? and is thus the (IP 
> Address | Domain)
> part corresponding to a topology element?
>   
Identifying topology elements by IP (v4, or v6?) makes the whole schema 
a bit restrictive. What if we need to monitor a layer 2 switch?
I vaguely remember similar discussion in Seville meeting last autumn and 
a statement the correspondence between e.g. interfaces in MA and 
topology elements will be defined in a different schema, that is under 
development.

The whole idea to identify a topology element with IP and domain name 
emerged as a _temporary_ solution!

Best regards,
Nina
> Best regards,
> Michael Bischoff
>
>   
> > The query we were expecting was:
> >
> >
> > What services (no matter the type) have data related to the following
> > network topology elements?
> >
> > jeff
> >
> > On May 23, 2008, at 3:07 PM, Michael Bischoff wrote:
> >
> >
> >     
> > > I'm not sure if its a valid use-case to figure out what kind of
> > > services a LS contains unless the LS is also bound to a Location/area. (so 
> > > something along
> > > the lines of which (h)Ls-es are there along the path -> what tools(->read 
> > > services) do I
> > > have avail to test this route?
> > >
> > > But to be honest for the near future I expect users to look for
> > > services by organisation (like what perfSONAR services are there available at 
> > > Belnet)
> > > (perhaps summarization in the
> > > gLS/dLS context should look at sending info on that too)
> > >
> > >
> > >       
> > > > That 'can' be? Or that currently exist in any given LS?
> > > >
> > > >
> > > >
> > > > Since new services can be created by anyone at any time, all possible
> > > > values can never be given.
> > > >
> > > > jeff
> > > >
> > > > On May 23, 2008, at 11:59 AM, Nina Jeliazkova wrote:
> > > >
> > > >
> > > >
> > > >         
> > > > > All,
> > > > >
> > > > >
> > > > >
> > > > > Is it possible to list all possible serviceType values, that can be
> > > > > registered in a Lookup service? e.g. for RRD-MA, SQL-MA, Hades, BWCTL, Telnet 
> > > > > SSH, etc.?
> > > > >
> > > > >
> > > > >
> > > > > I am looking for a way to establish a correspondence between the
> > > > > information currently  stored in MA.conf and one retrieved from a Lookup 
> > > > > service.
> > > > >
> > > > >
> > > > > Best regards,
> > > > > Nina
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >           
> > > >         
> >