RE: Sabotage investigation of fiber cuts in Northwest

[Henry Linneweh <hrlinneweh () sbcglobal net>]

I tend to agree, fiber rings when built out correctly have subtending rings to handle 
redundancy with extremely low delay times 50ms at worse
 
-Henry

"Douglas S. Peeples" <dpeeples () talabs com> wrote:

What you describe is a folded ring and is indicative of either a temporary
solution or bad network design. As a rule, phone companies and capacity
suppliers build very robust systems. 

Douglas S. Peeples
Technology Assurance Labs

-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of
Brian Bruns
Sent: Monday, November 03, 2003 7:39 AM
To: Henry Linneweh; Vincent J. Bono; nanog () merit edu
Cc: Sean Donelan
Subject: Re: Sabotage investigation of fiber cuts in Northwest 


----- Original Message ----- 
From: Henry Linneweh
To: Vincent J. Bono ; nanog () merit edu
Cc: Sean Donelan
Sent: Monday, November 03, 2003 6:02 AM
Subject: Re: Sabotage investigation of fiber cuts in Northwest


> Not having seen the entire cut, I would have to imagin the entire bundle
was
> cut and the poor splicers had their hands full.


> From experience, I can say that its quite easy to sabatoge a fiber run.
The
perfect example - a few years ago when I was a network admin, the whole NOC
where the bulk of our T1s were went out suddenly one morning. We discovered
that less then a block away a fiber seeking backhoe dug right through the
fibers - both the primary *and* secondary fibers - because Verizon burried
them both in the same trench rather then run them separate routes. So, the
supposed redundancy went right out the window.

The phone companies really aren't helping the situation one bit by doing
stuff like this.
--------------------------
Brian Bruns
The Summit Open Source Development Group
Open Solutions For A Closed World / Anti-Spam Resources
http://www.sosdg.org

The AHBL - http://www.ahbl.org