nanog mailing list archives

Re: Outside plant protection, fiber cuts, interwebz down oh noes!


From: Martin Hannigan <martin () theicelandguy com>
Date: Fri, 10 Apr 2009 11:48:14 -0400

Its all risk and cost. You possibly couldn't have spent enough to stop
this event. The outside plant wasn't at fault, highly motivated and
informed individuals were. Pretty much a non issue, IMHO.

Best,

Martin



On 4/9/09, Charles Wyble <charles () thewybles com> wrote:
Seriously though I want to start some discussion around outside plant
protection. This isn't the middle of the ocean or desert after all.

There were multiple fiber cuts in a major metropolitan area, resulting
in the loss of critical infrastructure necessary to many peoples daily
lives (though twitter stayed up so it's all good). :) It would appear
that this was a deliberate act by one or more individuals, who seemed to
have a very good idea of where to strike which resulted in a low cost,
low effort attack that yielded significant results.


So allow me to think out loud for a minute....

1) Why wasn't the fiber protected by some sort of hardened/locked
conduit? Is this possible? Does it add extensive cost or hamper normal
operation?

2) Why didn't an alarm go off that someone had entered the area? It was
after business hours, presumably not in response to a trouble ticket,
and as such a highly suspicious action. Does it make sense for these
access portals to have some sort of alarm? I mean there is fiber running
through and as such it could carry the signaling. Would this be a
massive cost addition during construction?

3) From what I understand it's not trivial to raise a manhole cover.
Most likely can't be done by one person. Can they be locked? Or were the
carriers simply relying on obscurity/barrier to entry?







-- 
Martin Hannigan                               martin () theicelandguy com
p: +16178216079
Power, Network, and Costs Consulting for Iceland Datacenters and Occupants


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