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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Worldcom Fiber Cut
Mike Trest (Yokohama Office) wrote: > Martin, > > SONET redundancy is an option which not all SONET/SDH circuit providers are > able to deploy. Even when it is deployed, the alternate strands are > frequently inside the same fiber bundle (collapsed backbone) which makes > primary circuit and the backup circuit subject to simultaneous back-hoe > fade. Request "DLR" approval on your circuit orders to confirm diverse > path . . . but do not hold your breath. > > My experience indicates that very few providers have truly diverse routed > backup fiber between more than a few of their major circuit nodes. Most > truly diverse routes involve "fiber swaps" among fiber owners with > non-contiguous fiber routes. Yeah, one of our European circuits purchased from teo completly differanttelcos went through the same fiber and the same switches from local loop to local loop. Whats odd is that they both cost completly differant prices with the same locak loop providors ;-) -- Leigh
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