[afnog] AMS-IX concerns

Adam Nelson adam at varud.com
Wed Oct 29 15:31:13 UTC 2014


Frank,

JTL is totally hosed right now but this was happening yesterday too.

Unfortunately, there aren't daily charts farther back that I can see.

I understand the manual thing but this chart shows, suspiciously, that the
throughput gets up to about 1Gbps and then drops dramatically - then gets
back up there, and drops again.  That seems like routing around a throttled
connection or something automatic.

-Adam



--
Kili - Cloud for Africa: kili.io
Musings: twitter.com/varud <https://twitter.com/varud>
More Musings: varud.com
About Adam: www.linkedin.com/in/adamcnelson

On Wed, Oct 29, 2014 at 6:27 PM, Frank Habicht <geier at geier.ne.tz> wrote:

> Hi Adam,
>
> according to
> https://eastafrica.ams-ix.net/connected_parties
> there are 4 peers connected (IXP NOC not counted).
>
> if one or two of them occasionally see better routes (not via IXP) to
> destinations at one or two of the other peers, something like this can
> easily happen imho.
>
> It look like it happens quite often, and doesn't last long, so routes are
> unstable. Generally not good. that happening only during work hours I would
> guess one (or more) humans are part of this - ie not because of saturation.
> My _feeling_ ....
>
> only participating networks, or route server operator are really able to
> tell.
> (Oh, and I heard: one of the participants is doing a network upgrade)
>
> Frank
>
>
> On 10/29/2014 6:03 PM, Adam Nelson wrote:
> > Hello,
> >
> > I'm looking at the following chart:
> >
> > https://eastafrica.ams-ix.net/technical--4/statistics
> >
> https://dl.dropboxusercontent.com/s/ncjo6o4yi0lgivd/2014-10-29%20at%202.24%20PM.png?dl=0
> >
> > I've looked at enough charts to see that the flat top at 1Gbps with deep
> > dips signals a saturation of some sort.
> >
> > However, I'm getting a very negative response from AMS-IX and since they
> > won't give out peering data, there's no way to confirm my suspicions that
> > something is wrong there.
> >
> > Anyway, does anybody have any information to support or refute the claim?
> > I may be totally wrong (which would be fine) but I really don't know.
> > Unfortunately, JTL, Safaricom, and KENET are all mostly down today so I'm
> > having trouble doing much research.
> >
> > Cheers,
> > Adam
> > --
> > Kili - Cloud for Africa: kili.io <http://kili.io/>
> > Musings: twitter.com/varud <https://twitter.com/varud>
> > More Musings: varud.com <http://varud.com>
> > About Adam: www.linkedin.com/in/adamcnelson
> > <https://www.linkedin.com/in/adamcnelson>
> >
> >
> > _______________________________________________
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> >
>
>
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