AT&T Outage cause last week.

Wed Apr 22 15:01:41 UTC 1998

There is supposed to be a press conference on this at 2PM today with the
CEO's of both AT&T and Cisco.  More information on this should come out
at this time.
Bill Goldstein
Senior Internet Specialist
AT&T
wgoldstein at att.com
TEL:(412)642-7288

   ----------
   From:       rjoffe
   Sent:       Monday, April 20, 1998 4:57 PM
   To:         nanog
   Cc:         rjoffe
   Subject:    AT&T Outage cause last week.

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   Date: Mon, 20 Apr 1998 13:57:38 -0700
   From: Rodney Joffe <rjoffe at bbn.com>
   Organization: GTE Internetworking
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   Subject: AT&T Outage cause last week.
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   --------------------------------------------------
   According to AT&T, in a story just released, the problem was a Cisco
   code problem. It would be interesting to hear what the actual
   software
   cause was, if anyone from Cisco cares to let us know?.../rlj

   - - - AT&T's network failure AT&T Corp. reported
    today that last week's frame relay network failure
    was due to a software-based problem. 

    Last Monday's network failure disrupted service
    nationally for thousands of AT&T's business
    customers for about a day. 

    The cause of the outage was previously attributed
    to the interaction between two frame-relay
    switches, but AT&T now says it was a software
    problem. AT&T Chairman C. Michael Armstrong
    said today the company is working closely with
    Cisco Systems, which provided its switches, on
    ways to fix the problem. 

    The type of network application affected by
    frame-relay service is "any kind of high-speed data
    applications where large amounts of information
    [are] exchanged in quick bursts," Granieri said.
    Querying an inventory database is one example of
    such an application, he said. Reuters contributed
    to this report