[50178] in North American Network Operators' Group
Re: effects of NYC power outage
daemon@ATHENA.MIT.EDU (senthil ayyasamy)
Mon Jul 22 09:08:15 2002
Date: Mon, 22 Jul 2002 06:07:41 -0700 (PDT)
From: senthil ayyasamy <mplsgeek@yahoo.com>
To: Marshall Eubanks <tme@multicasttech.com>,
Craig Partridge <craig@aland.bbn.com>, nanog@merit.edu
In-Reply-To: <web-1397576@multicasttech.com>
Errors-To: owner-nanog-outgoing@merit.edu
> You should also look at the other two presentations
> on 9/11 and the Internet
> at that meeting :
>
> http://www.nanog.org/mtg-0110/agenda.html
BGP stability was normal on 9/11. As we know only
the telephone network suffered more whereas internet
remained stable. Their might have been some problems
in the access because of the flash crowd problem.
A particular slide from the nanog 23 presentation
http://www.nanog.org/mtg-0110/ppt/misconfig/sld010.htm
shows the behaviour on 9/11.
Just observe closely the slide in the above link.
It covers a period from a period from 8/1 to 9/26 and
there was variation of 40-60 prefixes (between aug and
september), except on 9/11 (there was 100 changes.)
Only 0.1% of the route table was lost.
BGP was more unstable during code red
propagation(http://www.renesys.com/projects/bgp_instability/.)
A quick peek into both the graphs will make one thing
clear: *BGP is robust enough to withstand any extreme
congestion.*
But the question is: what can be an effective
solution for access congestion on days like 9/11?
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