Re: Cascading Failures Could Crash the Global Internet

[Douglas Denault <doug () safeport com>]

The model proposed makes several assumptions. My question is about:

   Many real-world networks are heterogeneous and as such are expected to
   undergo large-scale cascades if some vital nodes are attacked.

on page 3. I do not get the basis for this assumption. So any help for a 60's
educated math major would be appreciated.


On Thu, 6 Feb 2003 sgorman1 () gmu edu wrote:

> The paper is avaibable on the Los Alamos site free of charge:
>
> http://xxx.lanl.gov/PS_cache/cond-mat/pdf/0301/0301086.pdf
>
>
>
> ----- Original Message -----
> From: Sean Donelan <sean () donelan com>
> Date: Thursday, February 6, 2003 12:43 pm
> Subject: Cascading Failures Could Crash the Global Internet
>
> > Sigh, there are differences between tightly coupled networks, such as
> > the electric power grid and loosely couple networks like the 
> Internet.
> > But there are also some similarities, such as electric grids use DC
> > interconnections to limit how far AC disturbances propagate; the
> > Internet uses AS interconnections to limit IGP disturbances from
> > propagating.
> >
> > http://sci.newsfactor.com/perl/story/20686.html
> >
> > The actual article requires payment to read
> > http://ojps.aip.org/getabs/servlet/GetabsServlet?
> prog=normal&id=PLEEE8000066000006065102000001&idtype=cvips&gifs=Yes
> >

_____
Douglas Denault
doug () safeport com
Voice: 301-469-8766
  Fax: 301-469-0601