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Technology Stocks : Cisco Systems, Inc. (CSCO)
CSCO 73.99+3.1%Nov 12 3:59 PM EST
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To: The Phoenix who wrote (13631)4/22/1998 4:01:00 PM
From: LWolf  Read Replies (1) of 77398
 
Gary & All - a little more specific info from AT&T
(don't think this has been posted already).
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Subject: Reuters:(CSCO)-AT&T <T.N> details cause of data network failure

AT&T <T.N> details cause of data network failure
BASKING RIDGE, N.J., April 22 (Reuters) - AT&T Corp said
Wednesday a software glitch in switching equipment supplied by
Cisco Systems Inc <CSCO.O> caused last week's massive failure
in its high-speed data network that serves large business
customers.
AT&T said the problem began when a computer command was
issued to upgrade software code in one of the network switch's
circuit cards. This created a faulty communications path that
generated a large volume of administrative messages to other
network switches.
As a result, the other switches quickly became overloaded
and stopped routing data from customers' applications for
periods ranging from six to 26 hours before the network was
fully restored.
AT&T said it has changed its software upgrade procedures
and will install updated software with safeguards that would
have prevented the outage.
AT&T previously said it would not charge its frame relay
customers until the company had isolated and confirmed the root
cause of the problem and defined a fix. AT&T said it expects
that process to be completed shortly.
The frame realy network is a high-speed, packet-data
technology used by thousands of businesses that need to
exchange large amounts of computer information in short and
frequent bursts.
REUTERS
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Laura
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