Thanks Jay. On Mar 5, 2011 9:43 PM, "Jay Ashworth" <jra@baylink.com> wrote:
Nope; you're right. Folks; please move the SONET semantics discussion to, um, outages-discuss?
Cheers, -- jra
----- Original Message -----
From: "Ken J Guy" <Ken.Guy@ambest.com> To: "George Bonser" <gbonser@seven.com> Cc: outages@outages.org, outages-bounces@outages.org Sent: Saturday, March 5, 2011 5:40:27 PM 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@seven.com> To: <frnkblk@iname.com>, "Owen DeLong" <owen@delong.com> Cc: outages@outages.org Date: 03/05/2011 04:52 PM Subject: Re: [outages] Major Fiber Cut in Miami Sent by: outages-bounces@outages.org
On Behalf Of Frank Bulk Sent: Saturday, March 05, 2011 1:27 PM To: 'Owen DeLong' Cc: outages@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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