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Re: Cascading Failures Could Crash the Global Internet
From: David Barak <thegameiam () yahoo com>
Date: Sat, 8 Feb 2003 20:36:15 -0800 (PST)



--- "Stewart, William C (Bill), SALES"
<billstewart () att com> wrote:

If what's failing is an overload of BGP routes or
something,
that's different - and sometimes the load on the
system shrinks
as components fail, but sometimes that just makes
everything 
flap all at once, increasing load and delaying
convergence.

I seem to recall a massive routing failure in October
which was caused by BGP getting imported to a major
ISPs IGP...

The core ${VENDOR 1}routers were able to handle the
influx of routes, but the edge ${VENDOR 2} routers
could not handle the influx - so the failure didn't
exactly cascade, but did more of a ripple.  However,
the reloading of all of the edge devices increased the
BGP instability.

-David Barak 
-fully RFC 1925 compliant-

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