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Technology Stocks : The *NEW* Frank Coluccio Technology Forum -- Ignore unavailable to you. Want to Upgrade?

To: Peter Ecclesine who wrote (25781)	3/13/2008 2:38:06 AM
From: Frank A. Coluccio	Respond to of 46821

Hi Peter (and Jim). My first impulse after reading Jim's questions concerning survivability in #msg-24389104 was to post the same Verizon article as you did. Later, I came across a mesh networking tutorial from Ciena, which I thought was apropos, since it discusses in far greater detail the underpinnings of the optical platforms covered in the Verizon piece: -- Survivable Optical Networks: Intelligent Control Planes Enable Self-healing Networks By Jim Zik, Senior Product Marketing Manager, Ciena \| 3/13/2008 A snippet: "During a catastrophic failure, a network typically will automatically begin a sequence of events to restore services while preserving restoration schemes of the individual circuits. If a customer demands a specific restoration path for individual circuits, the intelligent control plane can factor those requirements into its restoration plans and restore services accordingly. </snip> The complete tutorial can be accessed here: convergedigest.com -- Of course, the mesh restoration schemes discussed above relate only to topologies beyond the first mile network, since first mile networks are still pretty much tied to tree and branch designs of yore, as if to suggest that central offices were still necessary due to the once distance challenges imposed by copper. On the fringes of civilization (or in sparsely populated areas) there may still be merit to the isolated tree and branch approach, but in denser settings? I think a good deal of examination and possibly work needs to be done there, or at least explored, since the heightened criticality of today's networks --especially those designed for mixed use-- demands it. ------