[outages] Major Fiber Cut in Miami

[Frank Bulk]

Thanks, Ken, for reminding me that discussions should go to
outages-discussion.  This is the last post on this issue until Jason gives
us a status update or that it's fixed.

 

Frank

 

From: Ken J Guy [mailto:Ken.Guy at ambest.com] 
Sent: Saturday, March 05, 2011 4:40 PM
To: George Bonser
Cc: frnkblk at iname.com; outages at outages.org; outages-bounces at outages.org;
Owen DeLong
Subject: Re: [outages] Major Fiber Cut in Miami

 

I'm sorry to be a kvetch, but it seems to me that a simple outage
notification on the "Outages" list has turned into a colloquium on SONET
failure modes.  If I should be in a different venue please flame away, but
the SNR here for "Outages" lately is sometimes as bad as NANOG. 

Ken Guy
Network Architect
AM Best Company 




From: 

"George Bonser" <gbonser at seven.com> 


To: 

<frnkblk at iname.com>, "Owen DeLong" <owen at delong.com> 


Cc: 

outages at outages.org 


Date: 

03/05/2011 04:52 PM 


Subject: 

Re: [outages] Major Fiber Cut in Miami 


Sent by: 

outages-bounces at outages.org

 

  _____  






> On Behalf Of Frank Bulk
> Sent: Saturday, March 05, 2011 1:27 PM
> To: 'Owen DeLong'
> Cc: outages at outages.org
> Subject: Re: [outages] Major Fiber Cut in Miami
> 
> While you're technically correct, it's not how it's commonly
> implemented.
> Well, maybe it's more common than I was aware. =)  It's not how
> regional and
> state fiber networks in our neck of the woods do it.
> 
> Frank

Concur.  If a customer buys a "ring" they expect a ring.  Protection is
implied.  If they buy a point-to-point, that is a different story.  A
protected point-to-point might be provisioned on a ring or it might be
provisioned with two separate point-to-point circuits.

A "SONET ring failure" would require two faults.  That said, I have seen
cases where both sides of the ring enter a building by the same trench
allowing one case of backhoe fade to take out the entire building.  


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