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Technology Stocks : Frank Coluccio Technology Forum - ASAP -- Ignore unavailable to you. Want to Upgrade?

To: Frank A. Coluccio who wrote (1626)	5/18/2000 10:19:00 AM
From: MikeM54321	Respond to of 1782

Frank- Thanks for your comments. Here's one of the PRs that sum up quite nicely what equipment vendors "claim" is possible: technologyevaluation.com I'm just wondering how it physically works? It's easy for me to understand metro-DWDM platforms being installed independently of a SONET platform. Then eventually, sending the SONET(in about five years) equipment to the trash pile. But apparently this is not what the equipment makers PR have in mind. Somehow, they co-exist. It seems to me they are saying they plug the SONET network right into the GbE-DWDM platform. Hope I'm not being too confusing. I really don't understand the details of either topology. I only have a very general idea of how it works from an investors viewpoint. I supposed the $64,000 questions are; 1) Can an SP who wants to upgrade his trunking/metro network, really buy DWDM-GbE "stuff" that will be able to integrate with their legacy ATM-SONET networks? Or 2) Is it a matter of making the decision to pretty much let the SONET die and run a parallel network using DWDM and GbE stuff? -MikeM(From Florida)

To: Frank A. Coluccio who wrote (1626)	5/18/2000 10:27:00 AM
From: Stephen L	Read Replies (1) \| Respond to of 1782

Frank you raise a very interesting and valid point about the new networking protocols (SAN) reducing geographic dependencies and changing enterprise and beyond workflows. Since this recent discussion started out of an interest in GigEthernet and rather than just focusing on the optical variant (as Mike suggested) I am wondering if some one can address the interoperability of Copper GigE with Optic GigE and eventually 10GigE. From an abstract level there should be easy and cost effective ways to link the two; but are the standards and technologies fully compatible. The "vision" is out there with many of the switch makers and carriers such as Yipes. Copper may be limited in distance but there is a lot of it in buildings and the local loop. And even TeraBeam Jolt Airwhatever promise to provide 2 KM hops at 2 Gig (if unshared). Finally back to SAN, I believe EXTREME and others while not taking the NAS plunge are contemplating a GigE replacement for Fibre Channel in the SAN. In addition to continuing the discussion on the merits of each stand-alone tech, I was wondering if anyone has thoughts on the overall topology (enterprise,local, metro, WAN, Backbone). Thank you for any comments, Steve