Re: RIS Query

[Antony Antony <]

Hi Jacques,

On Wed, 7 Jun 2000, Jacques Caron wrote:

> At 21:20 06/06/00, Henk Uijterwaal (RIPE-NCC) wrote:
> >One thing we can do is add a query with a field "AS-PATH", you enter
> >network, peer, data and time, and the output would be something like:
> >
> >[...]
> >A 193.0.0.0/8 17/11/1999 206.251.0.85      3549 1740 11127 8708
> >A 193.0.0.0/8 17/11/1999 193.0.0.56        3333 286 1740 11127 8708
> >A 193.0.0.0/8 17/11/1999 195.8.100.22      8259 5413 1740 11127 8708
> >A 193.0.0.0/8 17/11/1999 193.0.0.56        3333 1103 6453 1239 1785 11127 8708
> >[...]
> >
> >If you had entered "11127" as the AS path, it would select all records, if
> >you had entered "1740 11127", then the first 3 will be highlighted, etc.
> 
> The idea would be to have a table representation, with lines representing 
> changes (updates) over time, and columns, representing peers.
> 
> In the above case, with an input of "AS1=1740" and "AS2=1785", one might have:
> Date & Time     |206.251.0.85|193.0.0.56|195.8.100.22|1740|1785
> 17/11/1999 01:23|1740        |1740      |1740        |3   |0
> 17/11/1999 02:34|1740        |1785      |1740        |2   |1

IMHO column representation is probably not very suitable for 
time series. All peers may not update at the same time.
Also in columns you loose rest of the aspath info. You don't 
really see how a transit path may  get selected over other. Or
if put whole path columns will  become very long.  

> This way, one can see very quickly see which of multiple paths is used to 
> get to a specific network among a large selection of peers, and how that 
> changes over time (with the introduction of a new transit provider or of a 
> new peering connection, with AS padding changes, etc.).

> While I'm at RIS-related matters, have you ever though about "reproducing" 
> the recorded BGP updates? This could be useful for testing purposes: a real 

Yes it is possible. Current database will not help you here as it 
don't contain all BGP attributes. Raw data collected by RIS is 
in MRT's binary  format.  bgpsim, which comes with  MRT can replay it. 
You find about bgpsim in  MRT home page http://www.mrtd.net/ 
We haven't used this  to look at "interesting events".

regards,
-antony