AT&T prefix flapping?

J.A. Terranson alif.terranson at gmail.com
Sat Oct 31 02:31:10 UTC 2009


As a *customer* of ATT who has been fighting with every version of
"Technical Support", "IP Engineering", "Backbone Maintenance" and about 20
other made up names for level 1 support on this very issue for the last
three weeks on this and ?related? latencies in the 2000++ ranges, can we ask
again,

    IS ANYONE HOME AT ATT?

Thank you for your "support" in this not pressing to ATT matter.


---------- Forwarded message ----------
From: Jonathan Park <j13park at hotmail.com>
Date: Fri, Oct 16, 2009 at 3:26 PM
Subject: AT&T prefix flapping?
To: nanog at nanog.org



Hi all,
For the past two months,
it seems that AS7132 (SBIS-AT&T) announces and withdraws about 1,500
prefixes to AS7018 (AT&T) monitor every ~80 seconds.  This observation is
based on AT&T's monitor peering with RouteViews and RIPE.
Does anyone know what's going on?
Thanks,
Jonathan
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