nanog mailing list archives

Re: non-rate limited, automatable Looking Glasses?


From: Lars Prehn <lprehn () mpi-inf mpg de>
Date: Sun, 19 Jul 2020 11:49:00 +0200

Hi Baldur,

Yes, you are right. While, in general, Looking Glasses would be optimal, those LGs that I know have rules in place that prohibit automated requests and also limit the number of queries one can enter manually.

Best regards,

Lars

On 19.07.20 11:05, Baldur Norddahl wrote:
Just trying to clarify the question. If you observe a BGP route to 1.2.3.0/24 <http://1.2.3.0/24> with AS path 1 2 3, you want to do a traceroute to confirm that the packets indeed travel through ASNs 1, 2 and 3?

I would think that traceroute will have to be run directly on the same router that provides the BGP feed.

Regards

Baldur


lør. 18. jul. 2020 23.34 skrev Lars Prehn <lprehn () mpi-inf mpg de <mailto:lprehn () mpi-inf mpg de>>:

    Hi everyone,

    In the next couple of months, I want to compare data plane and
    control
    plane measurements on a larger scale. In particular, I'm looking for
    (publicly accessible) devices that receive BGP feeds and can
    perform a
    bunch of automated (paris) traceroutes. I currently do not have an
    exact
    probing rate or target set in mind; however, I'm sure that manually
    entering IP addresses as targets for usual Looking glasses won't
    cut it.
    Does anyone know less-restricted (maybe even automatable?) Looking
    Glasses (or similar devices) or is willing to provide access to one?

    BTW: I though about picking Atlas probes from ASes that feed BGP
    Collector Projects (e.g. RIPE RIS or RouteViews). Unfortunately, the
    respective probes are often really far apart from the feeding
    routers;
    thus, their individual perspectives are likely misaligned :(

    Best regards,

    Lars


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