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validating reachability via an ISP
- Subject: validating reachability via an ISP
- From: don.thomasjacob at gmail.com (Don Thomas Jacob)
- Date: Wed, 4 Apr 2018 12:58:45 +0530
- In-reply-to: <CAHgCv[email protected]>
- References: <CAEs0EmJSeN1CcpU5bdKdDhxmcQQSavK-DJ00KHbjikbpRhoqEA@mail.gmail.com> <CAHgCv[email protected]>
If you are fine with a commercial tool, Packet Design Route Explorer
product supports peering analysis:
one among its features.
Disclaimer: I work for Packet Design
Don Thomas Jacob
LinkedIn <https://www.linkedin.com/in/donthomasjacob/> | Twitter
On Thu, Mar 29, 2018 at 8:39 PM, Alexander Azimov <aa at qrator.net> wrote:
> Hi Andy,
> You can use Qrator.Radar API: https://api.radar.qrator.net/.
> The get-all-paths method will return the set of active paths for selected
> 2018-03-29 2:22 GMT+03:00 Andy Litzinger <andy.litzinger.lists at gmail.com>:
> > Hi all,
> > I have an enterprise network and do not provide transit. In one of our
> > datacenters we have our own prefixes and rely on two ISPs as BGP
> > to provide global reachability for our prefixes. One is a large regional
> > provider and the other is a large global provider.
> > Recently we took our link to the global provider offline to perform
> > maintenance on our router. Nearly immediately we were hit with alerts
> > our prefix was unreachable and BGPMon alerted that nearly 80 AS's noted
> > route had been withdrawn. We were not unreachable from every AS, but we
> > certainly were from some of the largest.
> > The root cause is that the our prefix is not being adequately
> > re-distributed globally by the regional ISP. This is unexpected and we
> > working through this with them now.
> > My question is, how can I monitor global reachability for a prefix via
> > or any specific provider I use over time? Are there various
> > I can programmatically query for my prefix and get results that include
> > paths? Then I could verify that an "acceptable" number of paths exist
> > include the AS of the all the ISPs I rely upon. And what would an
> > "acceptable" number of alternate paths be?
> > thanks in advance,
> > -andy
> | Alexander Azimov | HLL l QRATOR
> | tel.: +7 499 241 81 92
> | mob.: +7 915 360 08 86
> | skype: mitradir
> | mailto: aa at qrator.net
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