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RE: Utilization of the redundant ring in SONET
- From: Jeb R. Linton
- Date: Tue Jul 17 23:39:05 2001
Actually, most of the largest holders of fiber in the U.S. have started to
offer unprotected SONET (and Lambda) service. Apparently, a few months ago
OC-48 and OC-192 speed Unprotected Wavelength services caught on like
wildfire, and customers started clamoring for lower speed Unprotected SONET
I know of at least six of the biggest carriers here who offer it at OC-12,
and every one willing to guarantee a particular path - you just have to work
path diversity into your design. Some may even offer OC-3, though I haven't
I can say that the price point on Unprotected SONET services is great - if
you're building redundancy into your physical topology anyway, you may not
need APS. The savings can be huge.
Likewise, I agree that there can be great cost savings for "Preemptable"
service, though I wouldn't use it for a mission-critical network. I only
know offhand of one major U.S. carrier who offers this, but I'm sure others
do, or will - it just makes sense. There are plenty of services that can
stand an occasional outage.
> -----Original Message-----
> From: Glen Turner
> What you can't buy is two unprotected diversely-routed
> circuits. You can simulate that by purchasing a
> protected circuit with a single customer interface
> and an extra traffic channel.
> Glen Turner Network Engineer
> (08) 8303 3936 Australian Academic and Research Network
> email@example.com http://www.aarnet.edu.au/
> The revolution will not be televised, it will be digitised