[146198] in North American Network Operators' Group
General Internet Instability
daemon@ATHENA.MIT.EDU (Jared Mauch)
Mon Nov 7 10:32:46 2011
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <1320678667.4104.1.camel@teh-desktop>
Date: Mon, 7 Nov 2011 10:31:31 -0500
To: Tom Hill <tom@ninjabadger.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Nov 7, 2011, at 10:08 AM, Tom Hill wrote:
> On Mon, 2011-11-07 at 10:00 -0500, Todd Snyder wrote:
>> We seem to be having some problems with our tata links - first seen =
in EU
>> about 45 minutes ago, now we're seeing problems in NA. I'm focused =
on DNS,
>> so I'm seeing a lot of timeouts/servfails, but our networking folks =
are
>> talking about links dropping.
>>=20
>> Anyone else seeing oddness on the NA Internet right now?
>>=20
>> http://downrightnow.com/ confirms - something is up.
>=20
> There are widespread issues across the Internet; certain versions of
> Juniper firmware have core dumped after seeing a particular BGP =
'UPDATE'
> message.=20
>=20
> (That's the running theory at least).
>=20
> It's affected multiple service providers, globally, not just those
> connected to TATA.
Pretty much any major BGP event will impact multiple providers.
A threshold you should use to view the general instability (which I find =
valuable, you may as well) is route views data.
If you look at the BGP UPDATES archive sizes, you can see when something =
happens, e.g.:
http://archive.routeviews.org/bgpdata/2011.11/UPDATES/
Take a look at the size of the updates.20111107.1400.bz2 file and the =
1415 file. They are abnormally large compared to a normal period of =
time. This shows there were a lot of updates out there being processed =
and a reference to levels of instability.
If you are not feeding route views or similar community projects, please =
consider doing so. It helps paint the view for those doing analysis.
- Jared=
