Hi ris-users, my name is Fabrizio Lombardozzi, I've developed a system to monitor inter-AS routing instabilities (route flaps) at the Computer Networks Research Group, of the Roma III University, Italy. The system retrieves BGP data from RIS, and produces interactive graphs and animations using a graph drawing engine and intuitive morphing animations, with a reasonably friendly web graphic user interface (it's an applet). I will be grateful if you could give me some comments and hopefully suggestions. At the url http://www.dia.uniroma3.it/~compunet/ you will find detailed instructions to start the applet and also a gallery with screenshots and animations. Thanks in Advance Fabrizio
Hi Fabrizio,
my name is Fabrizio Lombardozzi, I've developed a system to monitor inter-AS routing instabilities (route flaps) at the Computer Networks Research Group, of the Roma III University, Italy. The system retrieves BGP data from RIS, and produces interactive graphs and animations using a graph drawing engine and intuitive morphing animations, with a reasonably friendly web graphic user interface (it's an applet). I will be grateful if you could give me some comments and hopefully suggestions.
At the url http://www.dia.uniroma3.it/~compunet/ you will find detailed instructions to start the applet and also a gallery with screenshots and animations.
This is a really nice tool. Two questions: 1. Is there a possibility to filter only paths between 2 AS's? When debugging a problem between AS1 and AS2, I'd like to see updates sent by AS1 that somehow involve AS2, not everything. 2. Data collection seems to take "forever", well, 10 minutes, but still long. Do you have any idea what causes this and would there be any mileage in mirroring/copying the DB, so one doesn't have to do queries over the net? I might have more questions after I've played with this some more. Henk ps. This would be a nice thing to present life at RIPE42 in Amsterdam, late April. ------------------------------------------------------------------------------ Henk Uijterwaal Email: henk.uijterwaal@ripe.net RIPE Network Coordination Centre WWW: http://www.ripe.net/home/henk Singel 258 Phone: +31.20.5354414 1016 AB Amsterdam Fax: +31.20.5354445 The Netherlands Mobile: +31.6.55861746 ------------------------------------------------------------------------------ That problem that we weren't having yesterday, is it better? (Big ISP NOC)
Hi Henk, first of all I'm sorry for the very long delay of this answer. I hope that my answers will be still usefull. On Thu, 21 Feb 2002, Henk Uijterwaal (RIPE-NCC) wrote:
Hi Fabrizio,
my name is Fabrizio Lombardozzi, I've developed a system to monitor inter-AS routing instabilities (route flaps) at the Computer Networks Research Group, of the Roma III University, Italy. The system retrieves BGP data from RIS, and produces interactive graphs and animations using a graph drawing engine and intuitive morphing animations, with a reasonably friendly web graphic user interface (it's an applet). I will be grateful if you could give me some comments and hopefully suggestions.
At the url http://www.dia.uniroma3.it/~compunet/ you will find detailed instructions to start the applet and also a gallery with screenshots and animations.
This is a really nice tool. Two questions:
1. Is there a possibility to filter only paths between 2 AS's? When debugging a problem between AS1 and AS2, I'd like to see updates sent by AS1 that somehow involve AS2, not everything.
Yes it is possible. When you set "query parameters" you can filter paths between 2 AS's typing their number in the text field on the bottom of the window. For more details there is a short guide at: http://taurasi.dia.uniroma3.it/~lombardo/flapviewer/howto.html
2. Data collection seems to take "forever", well, 10 minutes, but still long. Do you have any idea what causes this and would there be any mileage in mirroring/copying the DB, so one doesn't have to do queries over the net?
Yes data collection is quite long, I think there is a bottleneck close to my server. (Consider that, from here, a simple query to the RIS takes about 5 mins...). Surely mirroring would improve performance.
I might have more questions after I've played with this some more.
Henk
If you have more questions I will be glad to answer much more quickly.
ps. This would be a nice thing to present life at RIPE42 in Amsterdam, late April.
I'd really like to come at RIPE42, but I have just started a new job for a private company, so I think that it will not be possible for me to be present. Thank you for the interest in FlapViewer Fabrizio
participants (2)
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Fabrizio Lombardozzi -
Henk Uijterwaal (RIPE-NCC)