perfsonar development work

[Roman Lapacz <>]

Nicolas Simar wrote:
> About the monitoring tool itself:
>
> a) What test tool do you plan to use to monitor H.323 and SIP 
> connectivity?

First we need to investigate and write down the names of metrics to be 
monitored. I think in this kind of monitoring important are delay (owd), 
jitter and packet drops (of course there might be more).

> b) Can you describe how the test tool work:

I guess that Andras wants to focus on passive monitoring (monitoring the 
traffic during VC transmission). A test tool like BWCTL could be used as 
well but test traffic should have characteristics similar to real VC 
transmissions.

To start quickly with something simple for passive monitoring a simple 
monitoring tool (or script) could be used just to store values in rrd 
files. Those files would be accessed by perfsonar RRD MA.

> - how it is triggered (by a user)
> - how does work the tests?
> - how is a test triggered? (is there the need to synchronise both side 
> of connection? or can a test be launched from one side? )
> - how many packets are exchanged during a test

> b) Who are the consumer of the data? (please feel free to redirect me 
> to any of your internal documents :-) )
> Video-conferencing administrators from the NRENs, from a university, 
> the video-conferencing users?
>
> c) How will they access the information? (what visualisation tool, you 
> hinted one below) How will it be the data represented to them?
> You mention a clickable weathermap. Can you provide a little bit more 
> information about this.
> (please see a status page: http://perfsonar.acad.bg/status/ and how we 
> might be building another similar page for the network services at a 
> later stage: 
> http://wiki.geant2.net/bin/view/SA3/SaThreeAppNrenStatusPage)

The application made by Yee could be also considered (it's based on 
Google maps). It looks really nice and I remember it had very (!) 
positive opinions during last I2 conference.


Roman