I've been told that most networks are single points of failure. For whatever reason, load balancing, etc is simply not done as a matter of course.
I would speculate that configuring such routers/firewalls would be one or more orders of magnitude more complex than the already overly complex configurations. I have not seen any numbers, but it seems like such configuration issues are very high on the top ten failure causes. -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of scott Sent: Thursday, November 19, 2009 5:12 PM To: IBM-MAIN@bama.ua.edu Subject: Re: Check out Computer glitch to cause flight delays across U.S. - Mar ketWatch Patrick Lyon wrote: > On Thu, 19 Nov 2009 13:56:25 -0700, Roach, Dennis (N-GHG) > <dennis.ro...@lmco.com> wrote: > > >> Looks like a router failure >> >> http://gcn.com/articles/2009/11/19/faa-software-hackers-delays.aspx? >> > s=FAAnewsalert > > > 4 hours to fix a router? Good Grief. And no backup? Sounds like a single point of failure to me. Makes one wonder what other single points of failure there are. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
