Risk of Internet collapse grows

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1

There was also some interesting work done on the geographic location of
Internet resources done at Boston University:

http://www.cs.bu.edu/techreports/pdf/2002-015-internet-geography.pdf

Any chance the Rocketfuel project had a chance to map out UUNET/Worldcom
since the first run?

2

Any chance the Rocketfuel project had a chance to map out UUNET/Worldcom
since the first run?

not yet. but we intend to get to it soon; a lot of people have asked the
same question.

  -- ratul

3

since we are on the subject of availability of good data, i'd like to ask
the list what i have been contemplating for some time now.

understanding of routing (especially inter-domain) in the research
community is really primitive. this precludes us from having realistic
routing models. we recently started working on understanding prevalent
inter-domain routing policies. the ultimate goal is to improve the
efficiency, robustness and expressiveness of routing protocols.
http://www.cs.washington.edu/research/networking/policy-inference/

if you run a network that has choices to make (more than one BGP speaking
neighbor), you can help us by donating your bgp config files. abstracted
or anonymized versions are ok.
http://www.cs.washington.edu/research/networking/policy-inference/donation.html

further down the road, we'll need your help to better understand our
findings. if you are willing to answer our (possibly naive) questions,
please respond off-list; i am compiling a list of folks whom i can pester
for answers.

thanks,
  -- ratul

4

Ratul,

understanding of routing (especially inter-domain) in the research
community is really primitive. this precludes us from having realistic
routing models. we recently started working on understanding prevalent
inter-domain routing policies. the ultimate goal is to improve the
efficiency, robustness and expressiveness of routing protocols.
UW CSE | Systems Research | Routing Policy Inference

  It is not clear if you mean that tools (e.g. BGP) are
  primitive, languages to express policy in BGP are
  primitive, or application of what we have (BGP + whatever
  language you use) is primitive. Which is it (or which
  subset)?

  Thanks,

  Dave

5

if you run a network that has choices to make (more than one BGP speaking
neighbor), you can help us by donating your bgp config files. abstracted
or anonymized versions are ok.

http://www.cs.washington.edu/research/networking/policy-inference/donation.h
tml

I'm not sure if you want the bgp tables or the configuration itself. In any
case http://www.renesys.com/ currently has a project to collect bgp views -
you may wish to talk to them. There are also many public route-servers
that can give you a good view of the routing tables.

http://www.caida.org has done a lot of work on analysis of BGP

Mark Radabaugh
Amplex
(419) 720-3635

6

not sure why a config will help you any more than RR info which is much easier
to get and maintain.. ultimately if you want more detailed data you need a
complete view from each border router your interested in..

7

Of possible general interest to the list, I had begun work over a year
ago in 'mapping' out peering arrangements at various exchanges using
simple packet probing techniques (traceroutes mostly from behind various
providers nets) and gathering available public data. If anyone wants to
see the data or more info, let me know and I'll make it available. Its
only mildly interesting, but would be a useful method in developing maps
ala the Lumeta method. It takes a significant amount of time (very
difficult to automate) and energy to do this work, so its not all that
reliable, practical or timely in many cases.

John

8

  It is not clear if you mean that tools (e.g. BGP) are
  primitive, languages to express policy in BGP are
  primitive, or application of what we have (BGP + whatever
  language you use) is primitive. Which is it (or which
  subset)?

i would argue all of them; they are so tied to each other that its hard
for me to distinguish. bgp does not let you do everything you want, and at
times lets you do things you don't want. moreover, to my knowledge, the
way most people configure it is also primitive.

but our immediate goal is more modest - trying to understand whats going
on and what the impact of it is. the more challenging task of fixing
things will come later, when we know the current world better.

  -- ratul