Network integrity and non-random removal of nodes
William Waites
ww at styx.org
Thu Nov 21 18:31:26 UTC 2002
>>> "Sean" == Sean Donelan <sean at donelan.com> writes:
Sean> On 20 Nov 2002, William Waites wrote:
>> If you randomly select nodes to remove, by the time you have
>> removed 25% of them, the network breaks up into many isolated
>> islands.
Sean> One of the key points was the nodes were removed in ranked
Sean> order, not in random order.
I stand corrected.
It would be interesting to see what outdegree looks like as a function
of rank -- in the paper they give only the maximum and average
(geo. mean) outdegrees. Is there also a critical point 25% of the way
through the ranking? Probably not or one would expect they'd have
mentioned it...
So then the 12500 *biggest* routers have to be disabled before the
graph breaks into many islands. This would be yet harder from an
attacker's point of view, no?
-w
More information about the NANOG
mailing list