fiber cut 19 May/PM -> 20 May/AM in Ashburn, VA (lawnmower?!)

Fri May 21 14:03:01 UTC 2004

(Apologies to people from Eastern Canada...)

We in Canada refer to that as a "Newfie Ring".

That is just bad planning on the part of the telco.  Probably due to 
their size.  The facilities people don't talk to, or don't like network 
planning people etc. etc.

:-)

Robert E. Seastrom wrote:

>Dan Armstrong <dan at beanfield.com> writes:
>
>  
>
>>Forgive me, but
>>
>>Isn't Sonet usually deployed in a ring?  Why the heck would a fiber
>>this important not be?
>>    
>>
>
>sonet, obviously, does not *have* to be in a ring, but it often is.
>unfortunately, a fair percentage of the time, the additional
>protection offered by a ring topology is a mirage, due to a
>configuration known as "collapsed backbone".  in this instance, both
>pairs of fiber ride in the same conduit for some portion of the
>distance (most notably laterals to building entrances, but sometimes
>for a fair distance down the street).  the driving factor in building
>this way is usually cost savings.
>
>while this arrangement does protect against failures of optics and
>electronics (which in fairness are indeed more common than fiber
>cuts), it provides no protection against hungry construction (or in
>this case, lawn maintenance) equipment.
>
>                                        ---rob
>
>
>  
>
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