North American Network Operators Group

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RE: ATM failure - No the other kind of ATM

  • From: Reid Fishler
  • Date: Wed Sep 05 17:32:44 2001

Better wild guess. This weekend Citibank was merging with EAB, and was trying to merge the
two ATM networks...I assume this problem is dealing with trying to merge 2 disparate networks.


At 02:18 PM 9/5/2001 -0700, Rowland, Alan D wrote:


The story I read referred to a software glitch resulting from unusually high
volume over the Labor Day weekend.

Most ATMs use OS2 (stand around one until the maintenance person re-boots

My WAG (wild a** guess) is a fixed length field somewhere, say X,XXX,XXX,
and the network had 10,000,000 whatevers over the Labor Day holiday that was
then repeated when it came back up due to the pent-up demand from the system
being off line.

When was the last time you took a look at any data that increments in fixed
length fields?

Your mileage may vary.


-----Original Message-----
From: Sean Donelan [mailto:[email protected]]
Sent: Wednesday, September 05, 2001 1:11 PM
To: [email protected]
Subject: ATM failure - No the other kind of ATM

As most US residents are aware, the Citibank ATM/Automatic
Teller Machine network failed last night.  Citibank is
still having problems today.

>From Reuters:

"The Citibank ATM network and other systems experienced a
temporary outage last evening."  "While our systems were
restored by early Wednesday morning, we have continued to
experience difficulties this morning. We're working hard
to resolve the issues as quickly as possible."

Since there is very little "unique" network equipment in
the world now, just about everyone buys equipment from the
same vendors.  So the question is, Can we learn anything from
Citibank's experience.  Is there anything about their continuing
problems which may be used to improve general network reliability?

I tried to find out some information from Citibank's web site
about the issue, but I didn't see anything.