And unfortunately, sometimes cuts might be deliberate. I havent kept up on what the FBI came up with, but they were investigating some cuts in the Bellingham, WA area. Same cable was cut twice over the course of 2 years. http://www.usatoday.com/tech/news/2003-09-04-fiber-fails_x.htm Dan Hanson
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Deepak Jain Sent: Friday, May 21, 2004 9:42 AM To: Joe Abley Cc: Robert E. Seastrom; Dan Armstrong; nanog@merit.edu Subject: Re: fiber cut 19 May/PM -> 20 May/AM in Ashburn, VA (lawnmower?!)
configuration known as "collapsed backbone". in this instance, both pairs of fiber ride in the same conduit for some portion of the distance
... or even as two wavelengths on the same pair of fibre.
It's a sick, sick, twisted world.
Come on, that is what we call lambda-diversity. In case your fiber fails to carry, say 1550nm in the middle of the night, you are protected with your 1590nm lambda.
I don't believe how many people engineer for physical diversity and not lambda diversity -- and then its too late.
<jk, I've been up since 6:30am>
DJ