nanog mailing list archives
Re: BGP Problem on 04/16/2007
From: Warren Kumari <warren () kumari net>
Date: Thu, 19 Apr 2007 12:00:53 -0400
On Apr 19, 2007, at 10:17 AM, Robert E. Seastrom wrote:
With certain susceptible Sun CPUs which were popular during the last sunspot maxima, this was actually demonstrably true (and acknowledged by Sun), so don't laugh too hard.
Yup, Sandia National Labs made a radiation hardened Pentium and, as far as I remember, was working on a hardened SPARC -- there was also some work done (AFAIR on PPC) whereby 3 processors would run the same instructions and vote on the output...
---rob Leigh Porter <leigh.porter () ukbroadband com> writes:Somebody form a certain large network vendor actually blamed problems with their kit on cosmic rays causing memory corruption...
Oh, not just "somebody" -- a certain large vendor has many, many references to it -- and I have received it as a explanation for random reloads -- believe me, trying to tell an irate customer / PHB that the reason that his "mission critical" circuit bounced was because of cosmic rays is No Fun(tm). Hmmm.. Isn't this the same vendor that now has a router sitting on a satellite ?! ;-)
There was also an issue where one of the large manufacturers of (binary) CAMs received a batch of polyimide that was contaminated with an alpa-emitter (for some reason thorium oxide springs to mind) and their quality control didn't catch it... As far as I know the problem was identified before any products with the CAMs were shipped, but I had an order held up while the vendor tried to source alternate parts...
-- Leigh Porter Jay Hennigan wrote:Andre Oppermann wrote:Audie Onibala wrote:Yesterday on 04/16/07 between 3:00 - 3:45 PM we had sporadic Internet problem. Our ISP's are Sprint and Qwest.Around that time there was quite a bit sunspot activity and the moon had an unusual position too. The NOC contacts of your ISP's probablymay be of more specific help. But make sure to ask them for theirnetworks SPF (sunspot protection factor). That's an important metricto qualify their network reliability.Are you sure it was sunspots? My NOC contacts were seeing substantialmemory corruption due to cosmic rays. -- Jay Hennigan - CCIE #7880 - Network Engineering - jay () impulse net Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV
--After you'd known Christine for any length of time, you found yourself fighting a desire to look into her ear to see if you could spot daylight coming the other way.
-- (Terry Pratchett, Maskerade)t
Current thread:
- BGP Problem on 04/16/2007 Audie Onibala (Apr 17)
- Re: BGP Problem on 04/16/2007 Andre Oppermann (Apr 17)
- Re: BGP Problem on 04/16/2007 Jay Hennigan (Apr 17)
- Re: BGP Problem on 04/16/2007 Leigh Porter (Apr 19)
- Re: BGP Problem on 04/16/2007 tony sarendal (Apr 19)
- Re: BGP Problem on 04/16/2007 Robert E. Seastrom (Apr 19)
- Re: BGP Problem on 04/16/2007 Leigh Porter (Apr 19)
- Re: BGP Problem on 04/16/2007 Warren Kumari (Apr 19)
- RE: BGP Problem on 04/16/2007 David Temkin (Apr 19)
- Re: BGP Problem on 04/16/2007 Marshall Eubanks (Apr 19)
- Re: BGP Problem on 04/16/2007 Robert E. Seastrom (Apr 19)
- Re: BGP Problem on 04/16/2007 Douglas Otis (Apr 19)
- Re: BGP Problem on 04/16/2007 Warren Kumari (Apr 19)
- Re: BGP Problem on 04/16/2007 Jay Hennigan (Apr 17)
- Re: BGP Problem on 04/16/2007 Steven M. Bellovin (Apr 19)
- Re: BGP Problem on 04/16/2007 Andre Oppermann (Apr 17)
- Re: BGP Problem on 04/16/2007 Stephen Wilcox (Apr 20)
- Re: BGP Problem on 04/16/2007 Elmar K. Bins (Apr 20)
- Re: BGP Problem on 04/16/2007 Daniele Arena (Apr 20)
- Re: BGP Problem on 04/16/2007 Stephen Wilcox (Apr 20)