[60885] in North American Network Operators' Group
AT&T Blocking ICMP (was RE: AT&T US Network Slowdown?)
daemon@ATHENA.MIT.EDU (Paul Jasa)
Tue Aug 19 15:32:26 2003
Date: Tue, 19 Aug 2003 12:19:28 -0400
From: "Paul Jasa" <pjasa@univision.net>
To: <nanog@merit.edu>
Errors-To: owner-nanog-outgoing@merit.edu
A call to AT&T Worldnet confirms that AT&T Worldnet service is blocking =
ICMP in order to deal with an undefined emergency. Nothing posted on =
their site, nor any other info is available. If anyone has info related =
to this "icmp outage", please advise. Thanks!
pj
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Paul Jasa=20
Network Engineer=20
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-----Original Message-----
From: Sean Crandall [mailto:sean@megapath.net]
Sent: Tuesday, August 19, 2003 02:12 AM
To: Paul Jasa; nanog@merit.edu
Subject: RE: AT&T US Network Slowdown?
Importance: High
>=20
> Dear Nanogers,
> Is anyone aware of a "slowdown" issue throughout the US AT&T=20
> network since 8/18 at around 4pm which is causing a lot of=20
> internet circuits (including DSL) to be inaccessible and/or=20
> appear down from the outside world? AT&T says this has been=20
> escalated to "Level 4" with no ETA and affecting the whole=20
> country. I am seeing this problem in the San Francisco area.=20
> Just wondering if anyone else is experiencing anything that=20
> would confirm AT&T's claim, and fishing for more info about=20
> the possible cause and ETA. Thanks!
We are currently seeing the slowdown on our network in San Jose. =
Started
about exactly the time frame that you mentioned. The rest of the =
country
(oddly) seems unaffected by this at the moment, but San Jose is getting
hammered by something.
Still trying to sort out exactly where it is coming from.
-Sean
Sean P. Crandall
VP Engineering Operations
MegaPath Networks Inc.
Pleasanton, CA 94588
(925) 201-2530
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